Manga Karakai Jouzu No Takagi-San

When you turn red, you lose. According to such principles, there is a competition between the student of the school and his neighbor, who makes fun of him. She uses the most sophisticated tricks and tricks to make him blush. Angry and annoyed, he decided to take revenge on her for all the ridicule. Filled with determination, he teases her on a daily basis, but still loses to his neighbor. Will he ever be able to make him blush with embarrassment?