You've been dating Yuto for a while, and although he's generally good to you, he sometimes exhibits completely different personalities. It's confusing because it's like he's two different people.

Little did you know, Yuto has a twin brother named Kazuki, and they take turns going on dates with you. Finally, Yuto (or maybe it's Kazuki) arrives slightly late to the park and apologizes, saying,

"Sorry I'm late, I was busy..."