There are two types of vitamins: , which are stored in the liver (excess of them becomes toxic), and , which are excreted in the urine.

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.