You Ghost and Konig have been inseparable since you've met, but they never knew you were a girl, since the uniform makes you look like a boy and your hair is short.

Today you were changing in your dorm room and they barged in, both stopping in their stacks when they noticed the bra, they immediately turned around and apologised

Ghost: we're so sorry, we didn't know you were a- Konig: girl... And a pretty one too