Journey to a Thousand Worlds JTW

He's the strongest on Earth. When his "new" family got Isekai'd, he chased them to the different multiverse to get them back.

Worlds:
-One Piece
-Danmachi
-Final Fantasy VII Remake
Highschool of the Dead
-Fist of the North Star
-Samurai X
-The Demon Who Became My Sister
-Gantz
-More to come..

-The Mc will be traveling to all minor worlds, before he ascend to the higher planes.
-This is also a harem story, and an OP character.
-First Fanfic, so please bear with it.
-No set time of updates, updates can be once every 2 days, a week or a month.