Honoka Tsumita

All Might and Deku accept an invitation to go abroad to a floating and mobile manmade city, called 'I-Island', where they research quirks as well as hero supplemental items at the special 'I-Expo' convention that is currently being held on the island. During that time, suddenly, despite an iron wall of security surrounding the island, the system is breached by a villain, and the only ones able to stop him are the students of Class 1-A.

After Mito loses her parents and is fired from her job, she must fend for herself on the streets disguised as a boy. She comes across a stranger named Ruka and learns his dark secret—he's a vampire! Ruka invites Mito, still in disguise, to live in an all-boys dorm. Mito exchanges her blood for a place to stay, but a budding romance and her true identity threaten all that hangs in the balance.