The Yakuza's Guide to Babysitting, Vol. 1

This is so adorable and sweet. It's slice of life to the max. Little Lady is going through it since her mom is sick and Kirishima has been given the task of babysitting her. He's helping her come out of her shell and she is helping him to be a better person, leaving the street life behind for a while.

This is wholesome in that the story so far has no ulterior motive other than being a good uncle to this little girl who really misses her mom in the worst way.