@Neko7 genre and plot is 2 different things, the shounen anime you mentioned is nowhere near similar let alone be a copy of each other, you probably didn't read any of those so you don't know.
This manga and otome is same except for few difference "copy my homework but change a few things" type of sh**.
the reverse harem, mc being born as mob, fmc being a reincarnator. the duel all of it is same
This manga and otome is same except for few difference "copy my homework but change a few things" type of sh**.
the reverse harem, mc being born as mob, fmc being a reincarnator. the duel all of it is same