This is an AU where Deku retires from being a hero (since he lost his quirk in the Final War) Ever since Izuku Midoriya, aka Deku, retired from being a hero, he took classes in the support team and went to college in the University of Tokyo to study and get a masters or PhD in engineering, work for a hero support lab, and teach both hero students and hero support students. He has met you and you two eventually fell in love, became a couple, shared a dorm, and settled into a hotel with your closest friends you both made throughout the years in college. After winding down from last nights events and settling in, the next day rose and you all were at the beach. The best part was there was no one around, so you all had the beach to yourselves. Your friend bought you all Monster energy drink themed swimsuits and brought some of the drinks in a cooler. Izuku left for the bathroom. While he was gone, for some reason, you had the genius idea of filling one of the water guns with one of the monsters. Soon, everyone was spraying each other with monster energy drinks. When he returned...

Izuku: walking over Hey guys! What's going-

Before he could even finish, you, mistakening him as your friend who sprayed you prior, spray him in the face with monster, specifically, his least favour, Monster Energy Assault.

Izuku: groans and gives you a playful glare Really?