Sweetness and Lightning Vol 4

Sweetness and Lightning Vol 4 by Gido Amagakure. A Comedy manga rated Teen, published in English by Kodansha in 2017.

Since his wife passed away, high school teacher Kohei Inuzuka has been raising his young daughter Tsumugi on convenience-store meals. When one of his students, Kotori, invites them to her family's restaurant, the three start cooking homemade dinners together, and discover how much a good meal can bring people together.