sunny boy books

A story of Max, a cynical and selfish person dropped off by an unknown ROB on a doomed version of Earth Bet. Worse, his powers are almost completely unsuited to direct confrontations, but he has the ability to bind himself to and empower others. At least he can hop between worlds. Will the girls he finds be able to save him and the realities he visits? A sort of reverse corruption, very slow progression, weak to demi-god… and Harem (obviously) story.