From Renta!:
Keita’s a straight guy who never has any trouble getting the ladies. One day, he happens upon two guys having an argument. It’s the first time he’s ever seen gay men in real life, and it looks like the kind-of cute one is initiating a breakup. And not in very nice words, either! Despite his potty mouth, though, he looks deeply hurt. Keita somehow can’t resist him... A love story between a trendy straight guy and an extra-naughty gay guy!