Riinu of 'Strawberry Prince' Opens Pre-orders for First Book 'Ikizurai Bokutachi e'; Special Edition and Store Bonuses Revealed

STPR Co., Ltd. (Headquarters: Shibuya, Tokyo; CEO: Masato Kashiwara) announced that pre-orders for 'Ikizurai Bokutachi e' (To Us Who Find It Hard to Live), the first life story book by Riinu, a member of the 2.5D idol group 'Strawberry Prince,' began on May 31, 2026, at 00:00.

Information regarding the made-to-order special edition exclusive to the STPR ONLINE STORE and store-specific purchase bonuses has also been released. In this book, Riinu writes in his own words about the struggles and worries he has experienced throughout his life and career, as well as his feelings for those who have supported him.

■ STPR ONLINE STORE Exclusive Special Edition
- Title: Ikizurai Bokutachi e
- Pre-order Period: May 31, 2026 – June 14, 2026, 23:59
- Delivery Date: July 15, 2026
- Price: 5,764 yen (tax included)
- Contents: Special 'Keyhole' sleeve, foil-stamped binding, 2 special bromides, and a replica handwritten letter 'To You.'

■ Regular Edition Information
- Release Date: July 15, 2026
- Price: 1,760 yen (tax included)
- Pages: 160 pages

■ Store-Specific Bonuses
Original covers will be available at Animate, Miraiya Shoten, Kinokuniya, TSUTAYA, and Kumazawa Shoten. Other bonuses like clear files and stickers are available at Rakuten Books and other participating stores.