My favourite Japanese romantic comic is Last game 青春角力賽 This is a funny romance and the story being from the elementary school. there is a boy who is always the top one in the class, and there is a girl who transfers to his class and she is smarter than him that hurt his dignity because he always wants to be the top one on everything 😂😂 So there is a competition between them but the girl just doesn't care about him, he is the one overthinking 🤣🤣 He wants to win this girl so he also study in the same school from the elementary school to the university, the boy never gives up to let her notice that he likes her, so at the end the girl finally realised he likes her and they got married.