Yaoi manga

Where uke (i think) had an adorable coming out story where his mother took him to a cafe to check out hot guys and said he was the perfect child since now she can have both a son and a daughter in one.
The seme has a weird relationship with his grandfather(?) And threatens to kill himself if the gpa dares to harm the uke.
The seme also loves the ukes food, and cant stand eating fancy food.