The whole series of mangas with these characters are superior.
A sequel to a character that is the antagonist in "Change World", we can see his past and how that really fucked him up emotionally and made him an ass to happy couples, and after meeting Asahi he really started working on himself, and well made himself suffer because he did sucky stuff to others. HAPPY HE GOT HIS HAPPINESS!!! And Asahi found a person he wants to build a house to live in with and be happyyyyyyyyyyy!!!!!!!!!!!! I honestly love this couple so much.
Love Nest (Minaduki Yuu)