Original title: 春夏冬中 (Akinaichuu).
Released: October 7, 2012 (Kouroumu 8).
A 400-page collaboration book compiling stories from 53 artists, all featuring Morichika Rinnosuke.
The full content can be viewed at https://e-hentai.org/g/2802272/e4d08ce9f2
