※估算 根据卷数、再版次数、连载杂志等推算的参考值(非实测)
作品概要
Afterschool, in an empty classroom, Aiko and Yuuka share an manga exchange diary that they do not want anyone else to know about. Note: Includes 1 extra chapter.
来源: AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections