Pls help!!

Im looking for the title where:
- seme + uke met on vacation and uke wanting to be more promiscuous decided to sleep with the seme (i think they’re classmates and uke helped the seme out bc he lost his wallet?)
- seme is pretty open minded and doesn’t mind if the uke is in a relationship with a guy
- seme lived with his grandma till she died and was pretty lonely. There’s a bunch of scenes with a fireplace.
- uke is a physical student?

Thank you in advance!!