Protag transmigrates as the villainesses fiance and is in love with her
So basically, a young girl drunkenly (?) gets married to this older dude. They fall in love, bla bla, and have a child at the end. Also there was this really annoying guy that like the female lead and be tossed her ring into the ocean.
If I remember it was a psychological manga or smth, maybe not. It was about this dude who took pictures and went to a bakery to take some pictures of the place and food or something. He and the grandson of the owner went to this hotel room, I think, I don't remember. Then the guy gives the grandson some drink and he gets knocked out.
It was this manga about a yakuza(uke) who's clan was disbanding so he took a job as a BL mangaka. The seme had glasses.