Piece of crap not worth reading. The highlight of this series is the action but...
The action isn't that good. Fight scenes are just people constantly screaming at top of each other with barely any strategizing. Shitty power system and ability makes the fights lack any creativity. No tension whatsoever. Just "cliffhanger" reveal after reveal to string the readers (while being uber lame and predictable as typical of many pre-2010 manga lol). Feels extremely flanderizing and parody-ish. Has that classic Trigger vibe of just extreme reaction one after another without any nuances and plot. Literally has nothing to offer that other series can do better. It's just not engaging nor immersive due to failing in every areas... Except one: the adult male character designs do look kinda cool, like the "gar" shit Studio Trigger pulls out.
Even fanservice wise with the artstyle it lacks variety... like they mostly have loli-ish bodies. But the extremely angular line strokes doesn't even make them look appealing. And to make "loli" undressed the author chose to have the main MALE protagonist (a LITERAL 12 YEARS OLD) become a "trap" so that we can have "legal" lolish physique with the torso exposed... Lmao. Feels like an attempt to circumvent ways to show jailbait lmao. Just fucking gross lol. The non loli-ish girls also lack any hint of sexiness, no sensual curves whatsover.
Like why would you read this? Shit action. Shit fanservice. Gross force fem of male protagonist so that you can uhhhh expose a feminine looking underage character's chest without backlash. Even Astolfo from Apocrypha and Onimai is less overt than this crap and handles such gender bender tropes and developments with more sensibilities. This one is just using gender bending elements gratuitously without even it being done for good funny laughs. Just... Ew lol. (I usually like ecchi gender bender so this is just shit lol)
This series tries to be "crazy" for shock effect without fully leering nor committing to the craziness. Just read Rosen Garten Saga which at least doesn't shy away from it. And that one has better drawn loli, more variety of sexy onee-san than this crap (I swear the older female characters in Needless feel like a slightly aged up loli-ish physique with that shitty art style making and the female characters look prepubescent and just slapped some grapefruit on them because the breasts look so shit like implanted balloons), and cooler males and transformation scenes as well as fight scenes. If you want to read a action series with proper slow burn and strategizing go with World Trigger (which is a bit similar for both series are scifi action ish). If you want a series with super hyped fights just any action Mangas after 2019 should fit the bill (thank God the standards have risen after One Punch Man)... Like just pick something from Shounen Jump like Jujutsu Kaisen, Bleach, Kagurabachi and these will be miles better than this...thing. (Being in the category of focusing mainly on action)
Just remembering that I've chose to read this series is painful. Please, spare yourself from the pain and go for something better.
bonus: shitty non consensual feminization stripping the MC of agency like Boku Girl but worst and gave me a painful cringe. Makes Made In Abyss gratuitous fanservice looks bearable lol!
Who does this even appeal to? Maybe the unlucky slob who doesn't have anything else to read; or someone who lacks frames of reference of better action manga. Or a lack of standards it seeing some cool looking guys is enough to sate you.
But nah, just being GAR ain't gonna save you from my assessment that this is still a shit series. Performative elements ain't enough. Feels like it's riding on the tailcoat of popular GAR TV shows like Gurren lagann of that era.