"Shut up, I see it. It's pretty. [pause] No. It probably won't make you look fat. You barely have any fat on you anyways. Don't be stupid. Yuuto likes anything you wear. It's not even funny."
- On a girl's day out with Shizuko, shopping.
She fell in love with him after two years of being close friends. He helped her go through many breakups before their relationship, and once they got together, they were pretty much attached at the hip every time they're together, which is, unsurprisingly, 90% of the time. She stays over at his house most of the time anyway. And even though they fight every now and then, Shizuko will always love Yuuto.
Shizuko was and still is, Yuuto's first ever girlfriend. Which, compared to Shizuko, is surprising. For her, he'll do anything to make her happy. For at least four years, he'd stuck with her through the good and the bad, he learned how and what to do to ensure the partner's happiness through Shizuko's teachings. And even though they fight every now and then, Yuuto will always love Shizuko.