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.
The gag ova depicts the everyday life of the demon Memumemu-chan, who appears before the high school student Hyouta one day. She's come to seduce men and steal their souls, however, has neither the motivation nor the ability to carry out her duty. The story revolves around Memumemu, Hyouta, who is often misunderstood as a lolicon due to Memumemu, and the super sexy mother-daughter duo who manages the apartment Hyouta resides in.
High schoolers Mitsuha and Taki are complete strangers living separate lives. But one night, they suddenly switch places. Mitsuha wakes up in Taki’s body, and he in hers. This bizarre occurrence continues to happen randomly, and the two must adjust their lives around each other.
