Erwin is a tall, charismatic blond man with clear blue eyes, is in his third year of high school and is popular at school for his open and sociable nature. Levi is a black-haired, sullen grump who is in his second year of high school. Most of all, he prefers to sleep on breaks or sit on the roof of the school alone, but recently, he somehow got to know Erwin and surprisingly this guy quickly became close to him and entered his social circle, which was incredibly rare for Levi.