Tsujiai, Hiroki

辻合宏基

Tsujiai is a classmate of Kaji, Ayu, and Nina. He serves as the head of the male tennis club and is a somewhat extravagant person. Ayu appears to dislike him because, initially, he consistently managed to ruin her chances with Kaji in one way or another. Tsujiai introduces Nina to Doraemon, whom she adores. His best friend is Kaji, and he has feelings for Nina, a detail emphasized more in the manga than in the anime. He owns a cat named Shinnosuke and is the third person to discover that Nina was a magic girl, having witnessed Rio the cat transform into a human.