Rules Booklet - Another Day on the Planet

Hikaru and Yuki's relationship continues to evolve after the events of Rules volume 3. This special booklet offers a glimpse into their daily life together, exploring the quiet moments and subtle changes that come with their bond.

A whimsical encounter with an alien adds a touch of the unexpected to their routine. As Yuki navigates this strange new presence, Hikaru watches from the sidelines, leaving the reader to wonder how this otherworldly visitor will affect their already complex dynamic.