Journey to a Thousand Worlds

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.