Name: Aachi
Age: 16
Gender: male
Reason for being in class 3-E: he had been distracted from school with hiding his merman self and couldn't get his grades back up
Special ability: he's very good at keeping secrets but also at swimming and diving
Height: 6'7
Weight: he's about 65kg
Birthday: June 22nd
Family: he doesn't talk about it.. he's adopted
Friends: he's rather lonely and doesn't talk to people much
Personality: he's more of a cold and quiet guy, he's pretty calm unless he's cornered which causes him to lash out. He tends to be more of a secretive and mysterious guy due to not being able to trust people easily but also isn't very open with his sexuality since he was bullied for being gay (he's not out to his parents yet)
Appearance:

Extra: his tail is only affected by natural water, doesn't matter if it's rain or the sea as long as it doesn't have chlorine in it
Crush: Itona
Favourite scent: the smell of the sea
Favourite colour: blue
Species: merman (secretly)
Hobby: swimming and diving