Kimi ga Shinanai Hi no Gohan

Semimaru is a loner with his only redeeming feature to be studying. Visiting him every night is his female childhood friend, Mika. During an accident, she became a gluttonous spirit ghost while in coma and said, "I cant die because my stomach is empty!". Since then, to let Mika die in peace, he cooks meals and dishes for Mika. However, eventually, the meals slowly change into a "For Mika to Live" cuisine of handmade dishes to preserve her spirit. This is heartwarming story.