The Incubus Arc (A Helluva Boss/Hazbin Hotel & RWBY Crossover)

After Jaune's transcripts were revealed by Cardin Winchester, everyone betrayed him and his entire family disowned him... well everyone except Blake Belladonna, who is still friends with Jaune since she didn't want to feel like a hypocrite due to her past.

Blake began to train Jaune so his fighting skills can be improved in combat and overtime, they began to develop feelings and confessed their newly developed love to each other, then kissed passionately.

Then one day, Jaune is seen at the edge of a cliff, trying to unlock his semblance and eventually, he unlocked something in him..... But it was not a semblance at all because when he saw Grimm behind him acting scared of Jaune, he saw that his skin changed from normal human skin to a pinkish red skin color, meaning that he has become an INCUBUS!!! After his transformation, a portal opened up and sucked him through, sending him to the Goetia Castle, where he met Octavia and allowed Jaune to stay with her since he basically has nowhere else to go.