Teacher Ao is in love with the father, named Kurose, of one of the little kids that he teaches. He finds out that his twin brother, Midori, has a new, 3 times divorced, boyfriend and doesn't trust that he's a good guy, so his brother tells him to go out on his date in his place to get to know him. When Ao goes on the date he finds out that Kurose is his brother's new boyfriend. Ch2) Ao feels terrible about loving the man who he thinks is his brother's boyfriend and tries to avoid him. He finds out that Kurose is actually the twin brother of Shirase, who is the guy actually going out with his brother and who is actually the kid's dad. Kurose just wanted the opportunity to pretend like he was dating Ao because he secretly likes him. Ch3) This chapter tells about how Midori and Shirase met, with Shirase's son mistaking Midori for Ao at an amusement park. Ch5) the kids all grown up and confessing
Kuro X Koi