In a summer city, four people met in the same school, and the story begins here.
A scheming girl deliberately tries to frame others. The misfortune of her family makes her pretend to be cowardly. She always behaves very happily, with a warm smile appearing in every corner.
A girl who is always rejected, when she meets someone who wants to be friends with her, the feeling of happiness fills her body, and she opens her heart without any defense, thinking that with her sincerity, she will make this friendship last forever...
The boy who looks cool sometimes smiles like a child, hates hypocritical girls, but eventually falls in love with the girl who is thoughtful, has a happy family, and excellent grades. The boy who seems perfect is always very sad, as if there is some lingering shadow.
A sunny and humorous boy with short hair like a hedgehog broke his leg in order to save a girl who was sad because of friendship betrayal. This love finally turned into bubbles before it happened.