I love how the side characters are competent, useful, and even the hot headed one is ABLE OF RESTRAINT.
Oh, and how the MC let them work and trust them to do the job, even if he might be OP enough to do everything, which is NOT a certainty.
And SOMEHOW, they manage to do almost perfect teamwork without communicating… XD
oh… and on how it’s not the MC that is a chuunibyou, but his sister that he corrupted to our IRL anime. XD