Miyamori Yuzu

The only girl who's building up a relationship with Ryouichi at the point the story starts.

She loves sweets and wants to become a patisserie herself. Still, she's careful not to eat too much in order to maintain her figure.
Wanting Ryouichi to eat her sweets and compliment her that it's tasty, ever since the two were together in the home economics club she has been making him taste every new sweet to taste (it's been continuing for three years already, and has become natural for both).

Although she's usually quiet girl, she turns into a completely different, active person when she's cooking.