Board Thread:Speculation House/@comment-25045079-20140826195207/@comment-25110963-20160407203958

Are you refering to "hunter" as in a Monster Hunter or a hunter in Bloodborne? See what I mean in terminology? They use the proper terminology for a reason.

To answer your question, which Jaune already did, is that he said he always aspired to become a hero like his family. Apparently he wanted to be one so badly that he decided to sneak his way in and probably learn the rest while he attended.