Being born to a mathematician, liking math&physics to some extent AND loving Usopp is the worst fym it's almost 1 am and I'm biting my finger clawing at the walls at the mere idea of him calculating the fucking UARM + variables to accurately snipe someone he can't even see
My weird random ass One Piece HC is that the Fish-men are affected by the pressure difference between the water and the surface and while on land they look a little uncanny/silly but it also varies from Fish-men to Fish-men and it's also not insanely noticeable
Funny how my only knowledge of Usopp a couple months ago was "the black guy from One Piece that people on Twitter make darker (based)" and now he's like basically my whole personality (besides loving my partner)