RWBY: Demonic Heart

Jaune's transcripts are revealed early after Cardin hears him tell Pyrrha about them, with this Jaune decides to distance himself from his team so they don't get ridiculed. This however leaves him alone with only verbal support by his team and friends, and he is forced to live outside the dorms for a bit.

For a few months Jaune makes himself a home in the Forest of Beacon and due to some political nonsense he has to send his weapon back home, he has to use spare weapons from the armory at the school and learn how to use them.

In no time he gets better and through training he catches up to his friends, but thats not all fate has in store for him as he would become more than just a man, he would become the 'Dark Knight' of Remnant.