Movie 'Why do people write love letters?' and 'Maruai Kokoro Bank' Collaborate for a Giveaway Campaign Featuring Movie Tickets and Exclusive Merchandise
Maruai Inc. is holding a collaboration campaign with the movie 'Why do people write love letters?' and its letter storage service 'Maruai Kokoro Bank', offering movie tickets and free trial kits.
📋 Article Processing Timeline
- 📰 Published: April 6, 2026 at 22:00
- 🔍 Collected: April 6, 2026 at 13:30
- 🤖 AI Analyzed: April 21, 2026 at 04:07 (350h 36m after Collected)
Maruai Inc. (Headquarters: Ichikawamisato-cho, Yamanashi Prefecture, President: Michiya Muramatsu, hereinafter "the Company"), a manufacturer of paper and chemical products that brings color and joy to everyday life through various products under the motto "Wrapping hearts and lifestyles," will be conducting a giveaway campaign in collaboration with the movie "Why do people write love letters?" and our heart storage and delivery service, "Maruai Kokoro Bank."
This campaign is a collaborative project between the movie "Why do people write love letters?" which will be released on Friday, April 17, 2026, and the heart storage and delivery service "Maruai Kokoro Bank" provided by our company.
From those who apply, we will give away movie tickets, exclusive movie merchandise, and a free trial kit for "Maruai Kokoro Bank" by lottery.
◼️ Campaign Overview
Part 1
Application Period: Wednesday, April 1 to Friday, April 10, 2026
Prize: Movie ticket for "Why do people write love letters?"
Number of winners: 10 pairs, 20 people
Part 2
Application Period: Saturday, April 11 to Thursday, April 30, 2026
Prize: Exclusive movie merchandise & Timeless Love Letter Free Trial Kit (Maruai Letter Set + 1-year storage service)
Number of winners: 5 people
How to Apply
STEP 1: Answer the application form during the application period.
STEP 2: At a later date, we will send the next steps of the campaign to your registered email address. At that time, we will ask you to prepare a "Message you want to send to someone important in the future" and perform operations on SNS or LINE.
◼️ About the Movie "Why do people write love letters?"
Shinsuke Tomihisa, who was a high school student at the time, was a victim of a subway derailment accident that occurred on March 8, 2000. In 2020, a love letter arrived for Shinsuke's family. The letter was sent by a woman who commuted to school every morning at the same time and in the same train car as Shinsuke, and who harbored a secret affection for him.
It spelled out his appearance and growth that even his family did not know. The family witnessed the growth of their son, who was supposed to have passed away, across a 20-year span.
People's feelings never fade. Based on this miraculous true story, it was made into a movie with the cooperation of Shinsuke's family and the people involved.
This campaign is a collaborative project between the movie "Why do people write love letters?" which will be released on Friday, April 17, 2026, and the heart storage and delivery service "Maruai Kokoro Bank" provided by our company.
From those who apply, we will give away movie tickets, exclusive movie merchandise, and a free trial kit for "Maruai Kokoro Bank" by lottery.
◼️ Campaign Overview
Part 1
Application Period: Wednesday, April 1 to Friday, April 10, 2026
Prize: Movie ticket for "Why do people write love letters?"
Number of winners: 10 pairs, 20 people
Part 2
Application Period: Saturday, April 11 to Thursday, April 30, 2026
Prize: Exclusive movie merchandise & Timeless Love Letter Free Trial Kit (Maruai Letter Set + 1-year storage service)
Number of winners: 5 people
How to Apply
STEP 1: Answer the application form during the application period.
STEP 2: At a later date, we will send the next steps of the campaign to your registered email address. At that time, we will ask you to prepare a "Message you want to send to someone important in the future" and perform operations on SNS or LINE.
◼️ About the Movie "Why do people write love letters?"
Shinsuke Tomihisa, who was a high school student at the time, was a victim of a subway derailment accident that occurred on March 8, 2000. In 2020, a love letter arrived for Shinsuke's family. The letter was sent by a woman who commuted to school every morning at the same time and in the same train car as Shinsuke, and who harbored a secret affection for him.
It spelled out his appearance and growth that even his family did not know. The family witnessed the growth of their son, who was supposed to have passed away, across a 20-year span.
People's feelings never fade. Based on this miraculous true story, it was made into a movie with the cooperation of Shinsuke's family and the people involved.