Ore no Haitoku Meshi wo Onedarisezu ni Irarenai, Otonari no Top Idol-sama

A “nosy” high school boy, Suzufumi Mamori, helps out his apartment neighbor who had collapsed due to hunger. It turns out to be Yuzuki Arisu, a high school girl who's an up-and-coming idol! In order to become the her ideal idol, Yuzuki has been on an excessive diet. However, Suzufumi, worried about her health, treats her to a home-cooked meal,

“Ahhhhh… I can't take it anymore!"

She eats it up with a face full of happiness! Seeing how much she enjoys it, Suzufumi decides to tempt Yuuki with her favorite foods and make her “fall in love with food" again. This is a romantic comedy about capturing the heart and stomach of a special neighbor!

(Source: ComicWalker, translated)