beta
Not based on otome game but similar style plot enough to be added to this list.
MC is reincarnated as the 2nd princess Abella after the original drowned herself in the lake after learning she possessed no magic.
Evil side character
Magic
.
Not an isekai, but the same otome game plot motif spin-off.
All the MC wants to do is read books all day. She agrees to become the crown Prince 's fiancee in name only, to gain access to the royal library.
Villainess
Daughter Cultivation game
MC thinks she has ended up in the role of a villainess, because of the prophecy her magic teacher told her.
Magic
.
Mob Character
Oneshot
This story is not a isekai, but other wise fits this list.
Villainess
Magic
....
Boring ML
The MC uses forbidden magic to go back in time.
Not an otome game
Messages
You've found a nice selection here! (≧∀≦)