SOLVED. Reverse Harem - girl disguised as boy goes to academy/college to get to know her half brother

[Serpentine]

**SPOILERS** book where a girl goes to an all boys academy dressed as a guy, her mum let's her as she's a writer and getting info from it but the girl actually wants to go because she wants to meet her step brother. He ends up liking her then she tells him and that's the last bit I remember. I think I read it this year.

[Parparak Pink]

following

[Serpentine]

SOLVED - it's Breakbattle academy