Rated G because this is a muscle diagram?

it's actually one of two diagrams i had to make in order to make this character's design-- his flesh is translucent. So basically i did this, and put it to opacity ~60%, ptu a marking layer on top of this that was ALSO ~60%, and a bone diagram (which was crooked but oh well).

But this particular muscle diagram, despite being rough, ended up looking kinda cool and i secretly will occasionally draw muscle diagrams on scrapped sketches coz it's fun.