Natsui is a strict one, while Oda is the popular guy at school. Though they like each other, Natsui always put cold act in front of him. Even when Oda confesses to her, she hardly takes it real. She keeps challenging their feelings.
This one shot is pretty simple, but it reminds us one thing: we tend to like people that similar to us. However, in some cases, opposite personalities are much more comfortable. Two people can become one.