I was actually enjoying this somewhat at the beginning. It has an interesting concept, protagonist and subtle dark undertones to what was otherwise a pretty lighthearted story. However, that all changed soon after, becoming literally the worst thing I've ever read.
The fact the main character is a girl is used in a really distasteful way. Although she appeared strong at the beginning, she starts to pretty much just become a crybaby, crying really easily and being quite emotionally fragile, which was exactly the things I read gender-bending manga to avoid. I enjoy seeing strong, independent female characters who can stand as equals along males, but Nono in this manga did not do that at all. Her characterisation gradually weakened throughout the whole manga, going from strong at the beginning as she successfully fended off an attack by a perverted male to weak as she pretty much willingly
let herself get raped by this guy who would reveal her secret otherwise.
Other reviewers have said it "shows her determination" and whatnot but I really don't agree at all, since there were just so much other ways for her to handle it; she'd already been found out by other people even including a police officer who meant no harm, so she could have depended on them a bit more rather than basically
! giving up her body
. I was also mortified at how this scene was pretty much drawn in such a fanservice-y style, which I thought was really inappropriate.
The structure also doesn't feel complete. It seems there are parts missing from the story, particularly towards the end. Moreover, she didn't end up revealing her true gender to even her close friends or rival (except this one guy who found out by accident) which I also thought was strange, as I think her close friends at least deserved to know. Also, her visions of her brother were never really explained properly and the 'resolution' felt like it was taking the easy way out. Moreover, the last arc depended so freaking much on luck, especially with the last jumps with the guy who broke his record by a large margin to lead the team to victory. I thought this was also distasteful, since such a large portion of the manga focused on training so hard; you'd expect the victory to be based on their talents rather than some gods determining the wind explanation and basically pure luck.
Many characters also had really twisted ways of thinking, almost insane/mental-like although this is all treated as normal. I suppose this is what I should've expected from the guy who wrote Elfen Lied, but I'm really just disappointed. Although I've heard Elfen Lied was apparently some deep, complex thing, it seems that this work at least doesn't represent his talent well at all. Tones of insanity are just used to create an illusion of darkness and complexity instead of actual good storytelling.
I finished reading this because I thought it really couldn't get any worse, and held onto the hope that it might become as good as it was towards the beginning. However, I was wrong, and it really didn't salvage itself. This is probably the most disappointing thing I've ever read in my entire life.
Oh, but if you actually like any of the things I've pointed out as weaknesses, then give it a go. I tend to be quite open minded about things I read and enjoy a variety of genres; however, I don't think I could ever wholeheartedly recommend this to anyone.