Having had a tragic childhood, and wanting nothing more than a girlfriend, Belly swears to one day make Cassandra, the girl he loves, proud. However, that path is not going to be an easy one for someone like him. After finally awakening his magic, he manages to enroll himself into a prestigious knight academy, Arpie High.

As Belly continues trying his best to make new friends and prove that he isn't worthless, he finds out about the horrible life Cassandra has been going through all alone, and the two eventually start living together. Belly is determined to not only save her, but to also save everyone from her father, The Demon King Allister.