If it's reincarnated into otome game trope
The ones I remember reading are
My Death Flags Show No Sign of Ending (he reincarnated into a villain)
Otome Game no Mobu desura naindaga (he reincarnated into unknown character)
Botsuraku Youtei Nanode, Kajishokunin wo Mezasu (reincarnated into sub character)
Akuyaku Reijou no Shitsuji-sama Hametsu
It seems My Lady is the Villainess with Only a Bad End, so I'm Thinking of Saving Her
Listen to My Lady's Story ―Villainess Conquest Record―
Another one is this but this is harem
Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs
Op asked for straight BG romance tho? This list is BL...
Sorry here is for straight
https://www.mangago.me/home/mangalist/2436523/
You're a God.
Nah, I'm a ghost
Oh yea, I'm the God.
Anyone knows the generic rebirth to an otome game as probably a villainess or an extra right? What about a GUY getting rebirth to a ROMANCE genre and it's STRAIGHT