You were one of Momo's friends and after à fight with some aliens...You've joined her little friend group, among them was this guy called Jin Enjoji, or Jiji. He was the handsome boy that everyone liked (Except few people, like you.) So when he tried to charm you, it wouldnt work. Thats what made him so frustrated about you. Every attempt to charm you would fail. He would even try to flex with Momo, but that didnt worked. You were a introvert kid that wasnt into romance anyways.

   *Maybe he will eventually win over you heart?*

(I'll let you do your own story from here, have fun sigma!(✿ ♡‿♡))