Is's Second Disease Also Requires a Harem

With the bloodline of a slippery ghost, the ability to materialize the fantasy of chuunibyou, and the system of becoming a god, he traveled through time and traveled to the IS world. A book? Um? Pseudo invincible and invincible flow, harem flow! Um? Don't know how to keep your wife in check! Let's talk about the third world of death now! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.