A/N: Requested by UrielGonzalez574503, and the crossover involves RWBY, Highschool DXD, Trails of Cold Steel, Fire Emblem Engage and Rune Factory.
(Y/N L/N was an ordinary teenage boy who used to have a girlfriend, but everything changed when he caught her cheating on him with his bully Shade. Feeling heartbroken, he starts running, not knowing where he was going, but next day, his life changed for the best.)
(Y/N is seen currently in a school's infirmary as he sees a blonde girl sleeping next to him.)
Y/N: Is that...
(Suddenly she wakes up and hugs him, giving him a passionate kiss.)
Asia: Feeling better, my love?
Y/N: Uh... I don't think I know you...
????: We can understand your confusion, Mr. L/N.
(He turns to see Ozpin, Sirzechs and Vandyck along with several staff members.)
Y/N: And who are you?
Ozpin: My name is Ozpin, and these are Sirzechs Lucifer and Vandyck.
Sirzechs: We are the headmasters of a prestigious hero school we proudly call Union Academy.
Vandyck: We would like to have you as a student here.
(The students who overheard the conversation had different reactions. Some had doubts, others were happy, and there were a few who thought the headmasters were kidding.)
Ruby: (excited) A NEW STUDENT? THIS IS THE BEST!