ChesterCure
how about one piece but divided in two arcs like from the beggining of one piece until marinford and when the two years timeskip happens he travels to another world, i'm saying one piece for the Haki in the two years timeskip he could go to bleach or danmachi or mushuko tensei or mha You decide
then how about danmachi there You can improve the overall stats of the harem and mc after that go to another world since i think the next world after mato is one for the improvement of the harem and mc
ChesterCure:don't know much about one piece I'll being honest. At most I know the basic premise but the timeline and lore is none existence