1- Chizuka-san Ni Tsutaete (last 2 chp has main story)
Tbh i hated that other seme who come to visit this seme and told that "if it were me i wouldn't have let go from the start" he was not wrong this manga is pretty mature compare to this mangaka's other works also i think 4 years is long time for anyone they didn't meet new people spend their days in regret of letting go of each other. Even if seme changed himself for uke i feel that there is still emptiness but uke is happy let's take it in fictional sense.
Itoshi no Doctor Coat