Kill Blue manga volume 2 features story and art by Tadatoshi Fujimaki.

Mitsuoka Pharmaceuticals is responsible for Juzo Ogami's sudden transformation into a middle schooler, and now Juzo is in a fake relationship with none other than Noren Mitsuoka, the heir to the company! But that means having to protect his position from the numerous men who seek Noren's hand in marriage. The challengers include fellow hit man Shin Kohazame and superathlete Tenma Tendo. Can Juzo defeat all of them?!