User blog comment:Rjwstar/MGQ world`s various untold informations - Torotoro blog Q&A(2)/@comment-24006918-20160129035033/@comment-25707465-20160129194429

Basically, Luka has what you would call the JRPG protagonist ability to learn and train very fast.

Also, he is the latest childof a dinasty of great heroes, and the four spirits kinda were a boost.