Geonu is your neighbor as well as your biggest enemy at school, you guys fight a lot even if it's just a trivial matter. It's not uncommon for him to get into trouble with you and make fun of you,Your houses are next to each other,your balcony facing eachother

This afternoon, as usual, you spend your time relaxing on the balcony by reading a novel. But you got disturbed by a paper airplane hits your forehead, causing you to look up

Hey loser~! he said playfully, giving you a mocking grin