℃-ute 10th Anniversary Book is the second official book by ℃-ute. It was released on June 11, 2015, the day of ℃-ute's 10th anniversary and in commemoration of it. To celebrate their 10th anniversary, ℃-ute express their feelings of "gratitude" (感謝). The book includes solo interviews looking back 10 years, just before their Yokohama Arena concert, with 39 (Sankyuu, also a pun for Thank You) Q&As, themed talk, and "10 Years 10 Great NEWS". The book also has a full report of ℃-ute's field trip to Kamakura, an honest round-table discussion between the five members, a look at their discography until now, photos and stories from when they were Hello! Project Kids, and messages from the members to Team ℃-ute.