I can't exactly fight while climbing a tower with a mage on my back, so let's get to flat ground as quickly as possible, shall we? I recommend you stay silent for now, Tyrnen. We wouldn't want you to bite your tongue.

[ Kojirou's not going to wait for an answer, transferring the grappling hook gun to his right hand and letting the chain on his left hand unravel itself with a small infusion of mana. The fastest way to ascend the tower is, technically, never touching the few pieces of ground left at all. Go from one hook to the next as quickly as humanly possible.

Basically Spider-man in a generally upwardly direction, using the provided grappling hook and his own magic weapon alternately.

Sorry Kasen, he's going to leave you behind for now! Don't worry, once he gets inside, he'll drop a rope for you two! ]