Deku is affected by the Harem quirk. All the girls in class 1A were affected by Deku's Harem quirk. Mina, Tsu, Jiroo, Momo, Urakaka, etc were affected by the Harem quirk and they became fond of and crazy about Deku.You were also affected but not as badly as they were.Deku is confused by all this.One day, as usual, you came to UA and found Deku being teased by a class 1A girl.