Um idk what to do for the theme, any ideas

Oof, i'll just pick a random oc to use and then we can choose the theme i guess

oc is Bella (a oc that is sorta like luca and alberto a sea moonster that is a human above water) theme is IDK

sooooooooooo whats the theme? .>.

T^T

uhhhhhhmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm