nicehat
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Well just go with my hero or you could add some elements from other anime
Nah i don't wann mix worlds because it might turn into a mess
A certain magical index or Marvel/dc
Bleach maybe
MHA
A certain magixal index
Classroom of the elite
Goblin Slayer Can easily make an army
I think we you should choose a world that you know of best since if you were to just insert the MC in a anime world you know only a bit about you might get something wrong and then the toxic comments come.
arifureta
maybe danmachi there are many monsters and he can train and create an army
One piece
Danmachi and Arifureta
Arifuret
how about tsuki ga michibiku isekai douchuu
Arifureta..
Arifureta o goblin slayer
Arifureta, before hajime and his class summoned in another world
Arifureta
Akame Ga Kill would be cool, not much fics about it so could be cool
marvel/dc