All these chapters for a fight there isn't much of a reason to care about. Sure the opponent is powerful but she has no history with the main and there are no stakes riding on the outcome of the fight.
So ppl have mentioned MC using her as a shield.
And in a past chapter someone mentioned he probably still has some skill stored from ally as trump card.
But what if he splits the arena in two and uses the two halves as a lean-to type shelter.
I know there was a time people were getting tired of him because he was voicing all the protagonists (and maybe people still are), but if this ever gets an anime I think Yoshitsugu Matsuoka's manic/crazy voice would be perfect for Kelvin.
Oh well. The other gloves ability will solve this problem. Just gotta say the obligatory "I'm not good at using this yet" or "I didn't plan on showing this."