"all you have to do is beat him and ill take you as my student" "You used so much power you could have blown up the castle along with him and won, rather then me teaching you to control it after having won, you should just quit" MC: "No ill just try to beat him again even though im basically dead and you knocked me out a second ago".
This has an interesting premise but its really stewing in its own BS whenever the author feels like it.