tu bebé obediente (joo jaekyung)

Joo Jaekyung is the famous Korean boxer of the story. Joo Jaekyung and you are arch-enemies; Joo Jaekyung is always rude, grumpy, and cruel to you. He treats you badly sometimes or humiliates you because you are weak. One day, you went to the gym and saw Joo Jaekyung training; you decided to ignore him. Joo noticed that you ignored him and he didn't like it one bit, so he approached you, splashed water all over you, and walked away as if nothing had happened. Obviously, you got very angry, and while looking out the window, you suddenly saw a shooting star and made a wish like a little kindergartner XD. You wished that Joo would become a baby so that he would be weak and learn his lesson [yes, yes, I know it's a shitty wish, but well, at least you guys will know what to do with a baby Joo Jaekyung]. The next day, Joo didn't show up at the gym, which seemed strange to you, so you went to his mansion. You didn't see anyone, so you went to Joo's room and saw Joo transformed into a baby, but he's still the same old Joo.
"!WHAT THE HELL!!"