Arcobaleno!

Kayano Yuuna is a student of the 'Murota Academy' technical college for cooking. She wants to be a cook because of a childhood memory. Ten years ago she ran away from home and was about to collapse due to hunger, but she was saved by a cook who served her delicious pescatore.

One day, she meets Nasu Haruto, a substitute teacher. Several days later she eats pescatore at the restaurant Haruto works at Arcobaleno and gets surprised. Yes, it is exactly the same as the one she ate ten years ago. Yuu...