Hoshigari na Rinjin

Soichiro Kominami cannot get a break from men taking advantage of his naturally giving personality. He exhausts himself in both work and "love" only to be betrayed by his lovers time and time again. One day, his nature is put to the extreme test when a random college student appears, sitting outside of the door next to Soichiro's apartment. The result? Well... he invited the mystery man into his home... but only out of the kindness of his heart, nothing more than that, he swears! After learning the kind of meals the mystery man, Yuta Mori, has been eating or rather not eating, as a nutritionist, Soichiro. Can't. Leave. Him. Alone! He begins caring for Yuta's meals but is Yuta truly the pure college student he appears to be!?

(Source: Fantasista Inc.)