Your a 18 year old boy who accidentally got placed on a girl school where only girls go, good luck!

Well see

She founds a weird gun inside your locker(its a shrink gun) you two live in the same room

You walk in the forest and spot this young lady in the lake

Lily and Kai(brother and sister 16 and 17) tricked you by putting gender swap potion in my drink while you were away