Rinu Announces Release of Life Story Book 'To Us Who Find It Hard to Live' on His Birthday

STPR Inc. (Headquarters: Shibuya-ku, Tokyo; Representative: Masato Kashiwabara; hereinafter 'STPR') is pleased to announce that 'Rinu', a member of our affiliated 2.5D idol group 'Strawberry Prince' (Sutopuri), has announced the release of his life story book, 'To Us Who Find It Hard to Live' (Ikizurai Bokutachi he), chronicling his life, on his birthday, Sunday, May 24, 2026. 'To Us Who Find It Hard to Live' is a book where 'Rinu' spells out in his own words the conflicts and worries he has felt through his life and activities so far, and his feelings for the people who have supported him. Looking back on the events before meeting 'Sutopuri', his feelings when he started his activities, and his journey to the present, he delivers a message to those who hold onto 'hardships of living' just like himself. In this book, he also touches upon events and thoughts he hasn't spoken much about before, such as his childhood memories, his relationship with his family, his feelings of discomfort with his own gender, his past of almost giving up on his dreams, and the responsibilities and conflicts he has felt while continuing to act as 'Rinu'. In addition, through his experience of continuing to walk forward while wavering between the figure expected by those around him and his 'true self', the content is filled with the thought that 'you are not alone'. The standard edition cover illustration uses a newly drawn illustration by manga artist Gaku Kuze. It is a visual that expresses the theme of this work through the appearance of 'past self' and 'current self' facing each other. Please note that pre-orders for this book are scheduled to begin sequentially from 00:00 on Sunday, May 31, 2026. ## Rinu Life Story Book 'To Us Who Find It Hard to Live' Standard Edition Book Information - Title: To Us Who Find It Hard to Live (Ikizurai Bokutachi he) - Author: Rinu - Release Date: Wednesday, July 15, 2026 - Price: 1,760 yen (tax included) - Pages: 160 pages - Format: 46 size (Shiroku-ban), softcover - Publisher: Suirinsha Sequentially starting from 00:00 on Sunday, May 31, 2026 - Bookstores nationwide - Animate - STPR ONLINE STORE * Details will be announced at a later date. ## Rinu Profile A member of the 2.5D idol group 'Strawberry Prince' (Sutopuri), whose activities are supported by STPR Inc. In charge of the color red. Gaining popularity mainly through Internet video distribution, the number of YouTube channel subscribers is 2.3 million, TikTok followers are 1.3 million, and the total number of followers on various SNS reaches 8.67 million. (As of May 2026) Widely active, focusing on singing covers, and also involved in animation production. In 'Strawberry Prince's first animated film 'Strawberry Prince The Movie: The Beginning Story ~Strawberry School Festival!!!~' released in July 2024, he was selected as the lead voice actor, expanding his activities as a voice actor. In October of the same year, his own titled radio program started. In May 2025, a manga based on the original animation was released. In August of the same year, released the 3rd full album & held a 2-day one-man live at Nippon Budokan, and held an additional performance in Kobe in December. Official Links Official YouTube: https://www.youtube.com/@riinukun/ Official LINE: https://page.line.me/576xjmdi Official TikTok: https://www.tiktok.com/@riinukun Official Instagram: https://www.instagram.com/riinukun/ Official X: https://twitter.com/rinu_nico Sutopuri Official Site: https://strawberryprince.stpr.com/ ## About STPR Inc. Heading towards the Purpose of 'making the world more fun with creativity and passion', it is a [comprehensive entertainment production company] that aims to expand the possibilities of entertainment by creating attractive content that transcends dimensions. Founded on June 15, 2018, it develops MD (merchandising) business that produces and supports the activities of the 2.5D idol group 'Strawberry Prince', operates the independent music label 'STPR Records', plans and produces lives and events, produces character visuals of creators, and plans, produces, and sells goods. Currently, partnering with platforms such as YouTube and TikTok, it is also expanding the 'MCN business' that provides solutions including license management, monetization support, and promotion centered on music master rights and video content. In 2022, accompanied by business expansion, the new office was relocated to the top floor of 'Shibuya Hikarie'. Inside the office, a music studio & motion capture studio are attached, creating a content studio