- ONE OK ROCK
- Naihi Shinsho (内秘心書)
- Catalog Number
- Naihi Shinsho (内秘心書; I Keep It Inside)
- Kako wa Kyoukasho ni Mirai wa Shukudai (過去は教科書に未来は宿題; The Past is in a Textbook, The Future is Homework)
"Naihi Shinsho" is the first single released by ONE OK ROCK. The title track was used as the ending theme song for TV programs Super Chample, Itadaki Massuru! and Ranncyuu. The single reached #48 on the Oricon weekly charts and charted for nine weeks.