Pretty good 6/10 in my preferances. story is amazing 8/10. The mystery to it is so nice and all of those unexpected events, Nice. Thanks for the trans.
Warning: this review assumes you have read the entire manga, so if you really wanna read a block of text, hit the spoiler box and the boxes within.
Forgot I hadn't given my opinion on this one, and as I had forgotten what happens in the manga, re-read the whole thing.
Story (9/10):
The story seems pretty straightforward at the start, 9 people do a charm, it goes wrong and they are trapped in school hell, now they must reunite and leave with their lives intact.
That in itself sound like a typical nightmare of someone who wakes up at school at night and everything is spooky, turned up to 11, and it might seem a bit too 5/10 idea, until the characters actually die and don't all escape because they have plot armor, we find out that the charm is actually a curse, and that the ghosts and stuff are not the only obstacle, but your own thoughts can backfire you and turn you into a Dark Demon of Deadly Doom (basically D4, kinda like a 4-sided die with a 1 in every side), and one character is a descendant of the family of main bad ghost Sa-chan, and has to exorcise the everliving Jesus out of her while afflicted by the Spookening, only to have one last heart-wrenching sacrifice at the end and they leave with the memories of the fallen intact, at least for them, because everyone else forgets who Corpse-fetishist™, wall-girl, ass-medicine-yuri-god and chad-sensei are. Happy(?) End? Guess again bitch, Tenjin still stands and will keep breaking kneecaps of everyone dumb enough to try dubious charms from the internet...
That is an entire mouthful of twists and turns, and that instantly jumps the story up to a 9 for me. The story might be basic but the execution wasn't trash, rather the opposite.
Art (10/10):
The art in this manga really gets the point across and doesn't miss a chance to give visual cues, and it's also pleasant to look at when there are heart-warming and cutesy events, but gory and really crude when shit actually hits the fan. Also, consider it a plus that it's not filled with the unnecessary over-the-top panty shots plaguing the festering abomination that is Corpse Party: Musume, that shit was trashy as hell and basically felt like a walking fetish for death itself.
Characters (7.5-ish/10):
I usually don't put a number to the characters because, let's be honest, rating down works because a heroine is your plain tomboy tsundere is kinda unoriginal, but that is kinda subjective to whether you've already seen a work like that so you get the point.
I'm making the exception here because some character development is just non-existent (Mayu who dies in a heartbeat is an example), and It pains me so that one of the characters is main dude plain boy Satoshi; I stand by the fact that Naomi shoulda been MC and it would've been fine (I'm also one to think that generic MC's work for other works like Death March to a Parallel World, but that's for its own review when that manga is done). Satoshi as main just doesn't make sense in my eyes.
Overall (7.9/10):
Very great story, great art, questionable election of MC, but that's just my own problem in the matter, and it's to say it's still an intriguing and worthwhile read.
As a last note, I bet the ones that put a 1 rating in this work loved the Musume version of this story, which is mostly trash.