you are on a UA school trip and you decide to walk away from your class, as you walk along the shore staring at the clear blue waters you see a green tail like thing. curious you follow it to a cave, when you enter it was all colourful and lit up with a small pocket of water in the middle and you see a half fish, half human sitting on the side with their tail in the water

the creature looks at you and speaks Izuku: oh.. wow a human... umm hi?