While I like all the discussions about the characters in this chapter, I have a pretty big problem with it, like what the actual fuck is the MC doing in this fight? Like I get this is just so both characters can talk out their differences (which is great, I'm sympathetic to the reason but ultimately still think it's a bad decision) but why is the MC's whole battle tactic brain dead and dumb. He fights like Naruto in all of his fighting games (if you have played them you know what I mean), it's the same move set and ideas over and over again and hoping that it works, no real skill or planning is put into it. We had a bit of planning and skill before literally all of his skills were shown off to the world (and also counter really well too), so like come up with new ways to use the barriers that work against the counters that have been made.
This fight for example could have shown the MC trying a new way of using barriers, like for example using them as bombs that shatter because the barrier is unstable or as blades that repel magic on both sides of it so that it forcefully splits magic it come into contact with. There are so many interesting he can use them and change how they work to counter the weaknesses and just get stronger.
Tldr: characters actual talking about their differences and problems with each other, great. Fights that feel like someone spamming "A" over and over again when you could do other combos, terrible.