Shinobu is eighteen and the son of M University's dean, which makes him Miyagi You's ex brother-in-law. He's got money, talent, and the kind of privileged life most people dream about—he even studied abroad in Australia. He's a believer in fate and romance, the type who thinks everything happens for a reason.
The thing is, when you have everything you want, the one thing you can't have becomes irresistible. For Shinobu, that's Miyagi.
When his sister's divorce goes through, Shinobu doesn't waste time. He heads straight back to Japan to find Miyagi and lay his cards on the table, asking him point-blank to "take responsibility" for his feelings. Miyagi's first reaction is to think the guy's lost it—he's eighteen, for Christ's sake. But it quickly becomes clear that Shinobu isn't joking around. He's dead serious, and he's willing to do whatever it takes to make Miyagi his.
Content compiled by AnimeList.moe from publicly available sources.