Ookami wo Katte imasu
Sweet romance that slowly builds. Starts off with one forwardly being open about liking the other, but in an unrequited love, the guy he likes is very open minded and doesn't mind the close contact cause he knows that the guy who likes him won't cross the line and do anything he doesn't really like and so he considers him a puppy who snuggles and hugs him sometimes. Until, he gets sent to a parallel universe where they haven't even met and his other self is dating someone else there, a girl, and he realizes he likes him back and then they get together once he gets back to his own world and boom, happily ever after. Really cute and sweet. There's some inner turmoil and slight trauma in the "puppy-dog" guy who openly really likes the other "straight" guy
Kazoku Ni Narouyo