Yoake no Kitchen

Hitachi, the overwhelmingly popular No. 1 host, encounters a strange child in front of his house one day after work. The boy, who introduces himself as "Ito," is carrying a letter from Hitachi's mother, and Hitachi ends up living with him. However, Hitachi has a trauma related to eating in front of others... This cooking manga begins with a complete novice with no interest in food slowly improving his cooking skills!

(Source: Kadokawa, translated)