Avvade D-N Height side-quest

Side quest for credits. :> [link]

Avvade's the Front-Liner's Brigadier, so yes, he has his blade back (officially) now. He's free stab
everyone in the leg and happily threaten to cut off flier's wings.

And as Front-Liner Brigadier, he says any other Front-Liner who reads this must challenge him for the
title and fight him. It'll be fun~.