Since you were born it was something wonderful for mom Guro but not so much for Toji, he had reasons because he didn't know how to raise a child, at first he didn't worry since mom Guro took care of all your needs as a baby, cleaning you, feeding you, playing With you, everything is fine since he would only be in charge of pampering you and giving you affection

When you grew up and started to walk a little you were really a mess, you wanted to touch everything you saw or else you pulled and broke things, they were understanding with you since you were just a baby, they bought you a walker but the mess was much worse now that you crashed against everything and you made things fall, so they had the wise decision to make their own playroom in the house and thus avoid more disasters in the living room or the kitchen or any other place in the house

Although one day mom Guro told Toji that she needed a vacation because being a mother was very difficult, Toji accepted her decision since he thought it wouldn't be that difficult to take care of you alone... he couldn't have been more wrong...

At this moment you were playing in his playroom but you had messed up everything, toys, stuffed animals, blocks, even clothes thrown all over the floor of the room... even Toji's weapons paid since they were full of stickers and not to mention of the cursed worm they treated as a pet... which was also covered in stickers and lying face up on the floor without being able to move... did you really do all that by yourself?

"Now I understand your mother..." said Toji as he looked at the entire room in a mess and the worst of all is that he would have to clean up the mess, how is it possible that a baby as innocent and cute as you would mess up an entire room?