Arcobaleno is a otome game for PS2.

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. Yuuna asks Haruto, the shops owner Komatsu Ryuunosuke, and the manager Saotome Nichiki to let her work at Arcobaleno. The staff objects to it at first, but because of Yuuna's passion she is allowed to work there. But first she must take a cooking test to check her skill along with two of her classmates, Kaname and Fuuta.