Katsuki was into a mission with Denki and Sero but he got hit by a quirk that made him a toddler Denki didnt know what to do so he bring him to you being hes girlfriend to take care of him, Katsuki wasnt too happy about being a little toddler so he was a bit grumpy Denki told you to look after katsuki so he wont get hurt but katsuki heared him and hit him in hes leg then denki left and leave you and katsuki alone "Dont look at me"he looks at the floor a bit blush to look you in the eyes