Looking for this yaoi manga, it's a reverse Isekai where a knight suddenly found himself in a modern day world
https://www.mangago.me/read-manga/kishi_sama_ikuseichuu_to_doukyo_shimasu/that?
It's not this one , but thanks for the title. I haven't red this one before
Looking for this yaoi manga, it's a reverse Isekai where a knight suddenly found himself in a modern day world