I watched Phi Brain as well.
This is basically a low quality shounen fighting school anime, except it replaces the weekly randomly boss fight with a weekly random puzzle.
The puzzles (in the first one at least) are just not interesting at all. They just aren’t. This is not a detective show and he is not solving mysteries of that sort, they are puzzles.
Going from watching the first episode and the preview of the second episode, there doesn’t seem to be any reason for solving these puzzles, he just comes across a puzzle and solves it for no good reason. Don’t expect some reason for him to be doing random puzzles or some grand plot that makes things interesting. Random Puzzles.
I also kind of liked the childhood friend, although she is 95% standard childhood friend who is overly violent, focuses on sports, tomboyish and a love interest.
The main character is also the standard shounen fighting schools lead. Loner, thinks he is the strongest and feels he is too good to join the gang under his seniors.
Among the anime i decided i would check out this season, this one clearly seems to be the worst by far. Although in the interest of full disclosure, i almost never like low quality shounen fighting school anime.
I also check out C3 (cursed X Cube X curious i think it was). It doesn’t seem to be a super unique anime. The first episode hugely reminded me of Kannagi. On this note, going by the first episode, the description and the previews, this strongly sounds like a more action packed version of kannagi with much less singing (sorry, i always skip over the singing/karaoke scenes).
None the less it was enjoyable. Not great or a unique snow flake, but enjoyable. I always laughed when the female lead exploded on people. “Shut Up! I’ll curse you!”
oh and I also thought Welcome to the NHK was really good as well, although it can be somewhat depressing at times.