Aizawa's a normal teacher right? Wrong. He might not think it but he's a great singer. When Nemuri found out in highschool that he can sing he desperately asks her to keep it a secret which caused them to become like brother and sister. Nemuri finally convinces him to sing on youtube. What happens when he's discovered by his class and close friends? What happens when Aizawa starts to get a crush on his loud blonde best friend?