To a Globally Profitable mémento mori: Full-Scale US & Western Europe Expansion, with Profits Returned to the Nation and Regions of Japan

当社は、4月1日を夢を発信する日にしようとするApril Dreamに賛同しています。このプレスリリースは「NEXT合同会社（英語名：NEXT LIMITED LIABILITY CO.）」の夢です。

**NEXT LIMITED LIABILITY CO. (Headquarters: Kawasaki, Kanagawa; Representative: Ittoku Tanaka) aims to realize a new circular model by commencing the full-scale expansion of its life-log app "mémento mori" into the United States and Western European countries, and returning the profits obtained abroad to the nation and regions of Japan.**

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Taking the opportunity of today, April 1, 2026, NEXT LIMITED LIABILITY CO. will begin the full-scale expansion of its AI-powered closed life-log platform, "mémento mori," into the United States and Western European countries. This is a strategic decision following the app's establishment as the de facto standard service in Japan within the DeathTech (Thanatology × Technology) and HappinessTech™ fields. With a domestic market share already exceeding 80% and a user base of over 83 million, we will leverage this success to accelerate our overseas expansion and become the world's first to realize a "National Contribution Model" by returning the profits generated to Japan's national treasury, local communities, and its people.

## mémento mori Advances into the Global Market

Through this expansion, we aim to bring the burden on the Japanese people closer to zero in response to the severe national challenges Japan faces: a rapid decline in the labor force, an advancing aging society with a low birthrate, and soaring social security costs. Specifically, while the working-age population (15-64 years) is estimated to decrease by about 11 million by 2040 compared to 2025, the elderly population will reach approximately 39.29 million (34.8% of the total population), and social security benefit costs are expected to swell to about 1.5 times the amount in FY2018 (around ¥190 trillion). Pension benefit costs are projected to increase by about 1.3 times, medical expenses by about 1.4 times, and long-term care costs by about 1.7 to 2.4 times, making reduced tax revenues and increased burdens inevitable. By returning 100% of the revenue from mémento mori's overseas expansion directly to the national treasury, local governments, and social security funds, we declare our dream today to alleviate these issues through the power of technology and fundamentally reduce the burden on each citizen by allocating these funds to childcare support, regional revitalization, and strengthening medical and long-term care systems.

This decision is a national strategy that goes beyond mere business expansion. Since its official iOS release on March 5, 2026, mémento mori has acquired over 80% of the domestic market share and more than 83 million users in just a few weeks, becoming deeply rooted in Japanese society as the de facto standard for DeathTech and HappinessTech™. This achievement is the result of the app gaining explosive support, mainly from the senior demographic, as a mechanism that allows AI to summarize daily records and connect family bonds to the future while thoroughly protecting privacy. It has garnered significant attention in newspapers, magazines, and online news, including a feature on NHK's "Ohayo Nippon," and has responded to the earnest need of an aging society to "leave proof of being alive" through collaborations with local governments and media exposure.

Delving deeper, the declining labor force leads to labor shortages for companies, accelerating the slowdown of GDP growth and the shrinking of regional economies. By 2040, while the total population will decrease to about 112.8 million, the 34.8% aging rate will increase the number of people leaving their jobs for caregiving and create a shortage of medical and long-term care personnel (an estimated shortage of about 1.05 million long-term care workers alone), threatening the sustainability of society as a whole. The increase in social security costs creates a vicious cycle where the tax and insurance burden on the working generation rises, further accelerating the declining birthrate. The overseas expansion of mémento mori is an innovative solution to break this vicious cycle. By returning the revenue generated from user expansion in the US and Western European countries as a supplementary financial source for Japan's pension, medical, and long-term care systems, the realization of a zero burden on the public becomes a tangible reality. For instance, directing the returned funds to direct support for child-rearing households or to the development of digital infrastructure in elderly care facilities, thereby improving labor participation rates and revitalizing regional vitality—such concrete images have already been verified through internal simulations.

This expansion targets major Western countries including the United States, the United Kingdom, Germany, and France. Simultaneous distribution on the App Store and Google Play will begin on April 1, 2026, with the introduction of multilingual support (English, German, French, etc.) and AI models adapted to local cultures. In Europe and the US, the philosophy of "memento mori" originates from ancient Roman culture, and there is a strong foundation for positively perceiving perspectives on life and death, so we judge the app's universality to be extremely high. By ensuring full compliance with local laws and regulations (such as GDPR), partnering with overseas companies, and promoting local media campaigns in parallel, we aim to acquire a user base of 10 million in the first year. The profits generated from this will be 100% returned to the nation and regions of Japan, without being allocated to internal reserves or dividends. The return scheme will prioritize transparency, introducing audits by third-party organizations. It will combine direct donations to the national treasury, regional allocations to local governments, and dedicated investments in social security funds, to be used for measures against the declining labor force (e.g., youth employment support programs), measures against the aging population and low birthrate (e.g., childcare and education investment), and measures against rising social security costs (e.g., medical and long-term care subsidy funds).

This model is a globally unprecedented "national contribution through technology." The background to mémento mori becoming the de facto standard in Japan is not just the app's proliferation, but a shift in the consciousness of society as a whole. The figure of over 80% market share is proof that a wide range of generations, from seniors to young people, mainly among iOS users, have accepted the philosophy of "making life shine by contemplating death." The user base of over 83 million is equivalent to about 60% of Japan's population and reflects the expansion of family-unit usage (if one person in a family has a paid plan, all family members can view for free). This has established a privacy-protected inheritance of wisdom, impossible with conventional public SNS, as a social infrastructure. The overseas expansion will globally extend this successful experience and, by repatriating the funds obtained to Japan, realize the ultimate dream of a zero burden on the public. Even if the labor force decreases, social security can be maintained through technology and financial circulation—this is the future we envision.

### The Social Significance and National Contribution Achievements of Becoming the De Facto Standard in Japan

mémento mori's domestic success is not just about growing its user base. Immediately after its release on March 5, 2026, it was featured in media outlets including an NHK special, and in response to the voices of seniors wanting to "leave a living proof on something like Instagram," a major update was implemented on March 23. As a result, its adoption in local governments, NPOs, and corporate welfare programs expanded rapidly, making it the standard infrastructure for DeathTech and HappinessTech™. This achievement is directly linked to solving social issues such as revitalizing family communication amidst a declining labor force, preventing solitary deaths, and passing down wisdom between generations. Data from 83 million users (anonymously aggregated) has confirmed that AI summaries of daily records trigger family conversations and have an effect on reducing caregiving burdens. Using this as a foundation for overseas expansion, the cycle of returning profits to address national challenges can be promoted to the world as a sustainable social model.

### Strategic Details of US & Western European Expansion and Global Vision

The expansion will begin immediately on April 1, 2026. The target countries are the United States (the largest English-speaking market), the United Kingdom, Germany, and France, with gradual expansion to other EU countries. For local adaptation, we will introduce culture-specific AI emotion analysis models and integrate with Western views on life and death (e.g., inheritance culture). Marketing will focus on securing features on the App Store, collaborating with local influencers, and partnering with the funeral and insurance industries, with a first-year revenue target in the tens of billions of yen. The full return to Japan will be stipulated in contracts to ensure transparency. This global model will prove the universality of mémento mori and elevate a Japanese-born DeathTech to a global standard.

### Operational Image of the Profit Return Scheme and Long-Term National Impact

The return funds will be sourced from overseas revenues. They will be allocated at a ratio of 50% to the national treasury, 30% to local governments, and 20% to social security funds. Specific uses will include a "Labor Force Security Program (reskilling, immigrant support)," a "Fund for Measures Against Declining Birthrate (expansion of free childcare and education)," and "Social Security Cost Supplementation (pension and medical subsidies)." Transparency will be ensured through third-party audits and public reporting. In the long term, this will contribute to mitigating the 2040 problem and clarify the path toward achieving a zero burden on the public. This initiative will enhance the sustainability of the Japanese economy and also lead to an improvement in Japan's international brand.

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## What is the mémento mori app?

Here, we will clarify once again what kind of app "mémento mori" is. The app is an AI-powered closed life-log platform. It is not just a diary app or an end-of-life notebook app, but an innovative service that realizes "record -> reflect -> share with necessary people" in a single mechanism. It reinterprets the ancient Roman philosophy "memento mori" (remember death) in a modern way, aiming to make life shine brighter by being conscious of death.

## What you can do with mémento mori and its uses

Specifically, you can do the following with the mémento mori app.

### Leave a personal history

Simply record casual daily events and realizations like taking a memo, and the AI will automatically organize and summarize them. For the poster, it accumulates as a beautiful, chronological "personal history," with intuitive keyword search and reflection.

### Inherit wisdom

The AI extracts, summarizes, and answers based on the search intent, retrieving the experiences, lessons, and life wisdom left by family members. Instead of "reading a deceased person's diary," it feels like "asking a life senior via AI," allowing for its use in solving daily questions.

### Prepare an ending note

Centrally manage important information such as asset information, accounts, passwords, and funeral wishes. When sharing, the AI extracts and conveys only the necessary information, not the original text, minimizing the burden on loved ones.

### Deliver to the future with a time capsule

The AI automatically delivers warm, context-aware messages at a specified future date and time (a child's coming-of-age ceremony, a wedding anniversary, etc.) or "the moment a memorable place is visited."

Other features include **location-linked notifications** (notifies with an episode when a family member approaches a related place), a **family sharing model** (if one person in a family has a paid plan, all family members get free viewing access), and **privacy protection with world-class encryption technology (even operators cannot decrypt the original text).** The **biggest innovation is the design that "does not show the original text,"** which removes barriers of embarrassment and privacy, delivering only the "necessary thoughts" filtered by the AI. This enables the inheritance of wisdom while preserving dignity, which has become the foundation for its de facto standardization in Japan.

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## Comment from Ittoku Tanaka, Representative of NEXT LIMITED LIABILITY CO.

"Now that mémento mori has become the de facto standard for DeathTech and HappinessTech™ in Japan, I am proud to announce our dream of overseas expansion and profit return. Our mission is to solve national challenges—a declining labor force, an aging population with a low birthrate, and rising social security costs—through technology and financial circulation. I am grateful for the support of our over 83 million users, and by returning the profits earned overseas to Japan, we will contribute to realizing a zero burden on the public. Together, let's connect a society that makes life shine by contemplating death to the future."

## Roadmap

2026: Start US and Western Europe expansion, set first-year return amount target, complete domestic Android version rollout.

2030: Expand user base, achieve over ¥1 trillion in returns, strengthen collaboration with local governments.

2040: Expand multilingual support and features, set milestones for achieving zero public burden, achieve global standardization.

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## App Overview

App Name: mémento mori

Supported OS: iOS 17.0 or later

Price: Free (with in-app purchases and subscriptions)

Download URL (iOS only): https://apps.apple.com/jp/app/id6751426646

Product Page: https://memento.next-healthcare.co.jp

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## About NEXT LIMITED LIABILITY CO.

NEXT LIMITED LIABILITY CO. was established in March 2017 and provides technology-driven services, primarily in the healthcare domain. Its main businesses include operating the "Kyushoku Keikaku" service, which matches local restaurants with employees for nutritionally balanced meals, and research and development utilizing Apple Watch.