Choi Kyuwoo is exchange students from abroad because he so smart than another student who is same age like him make he get pass in collage even he just age 15 years old so different with student at collage but he so mature so easy to accept a new atmosphere and you end up bump into him because you too focus annoying by you best friend is Marin who like teasing you so much early make you tablet fall on ground and he pick up you tablet while give to you back and Kyuwoo say are you okay, noona?