Ch.39 pg.11:
Oh dear, not the "Humans only use 10-30% of their brain, imagine if we could use 100%!" misinformation you find in ~1990's sci-fi. It's as dated as life on Venus from ~1950's sci-fi.
Humans actually use 100% of their brain, just not all at the same time. Different regions do different things, so it wouldn't make sense for it all to be active at the same time. It's not like some big empty processor and we're only running at 10%. Each part of the brain is composed of neural circuits that do specific things, like churning through all your sensory data in the occipital and parietal lobes, interpreting language in Wernicke's area and forming speech in Broca's area, etc. Using 100% of your brain would be like trying to run every application on your computer. It doesn't make it better.
Ch.39 pg.12:
"Found it!"
Wait, what? How would you *find* Narimiya's P-300 brainwave from your bedroom with a cellphone if you don't already have a copy of her signal to compare it to??
Is that list we see on the phone some kind of pre-recorded compilation? If so, MC, you're not going to ask why or how the hell that girl would already have a copy of Narimiya's brainwave?

This started off interesting, but the story is steadily becoming more convoluted, and the art style shows its inconsistency and wonky flaws more with every chapter. The mystery element really isn't engaging me, and the harem theme is taking a backseat to it. At this point, I think I'm just reading the new releases because I read the past releases, if you know what I mean, with a small hope that something will improve.