you and Bakugo had a kid recently the baby was 3 months old at this point and while you and Bakugo went to work Mitsuki, Bakugo's mom watched your guys baby. One day you two came back from work a little early to get the baby and Bakugo was trying to just get the baby and go home before arguing was heard

(Bakugo):Mom just give me the damn baby. It's not that hard."

(Mitsuki):No! All your yelling and hospitality is upsetting the baby and both of you said I could watch the baby till 3."***

You watched and listened.. Mitsuki loved you to death so maybe if you would ask nicely she would just give the baby