This manga only made me feel squeamish, shizuka as a character didn't make me conflicted, it made me hate her since day 1, everyone is so sad and broken and beyond repair that it gets annoying quickly as you see no character development for the whole manga.
The thing here is that takopi doesn't land with the characters as it should, the only person you truly feel bad for is Azuma since he didn't intend to do what he did, Takopi landed well too as this annoying octopi that doesn't know how human emotions work. So what did it do wrong?
Shizuka is insufferable and unlikeable right from the start to the end, her character has no positive qualities and it made me wonder why would you write a story with Marina and Shizuka if you're going to make it so cliché and are going to rely so hard on the reader feeling pity and empathy for the absurd 1% chance someone feels connected to any of the characters, 2 batsh1t insane moms and the other one being a wh0r3.
Art and atomsphere are great, but that writing and narrative are absolutely unwarranted and gets violent and absurdly bloody for no reason (as a gore reader I can see why this feels gratuitous and only made for shock value.
That's the problem here, unlikeable characters, unrealistically violent children, everyone is a psycho and that's not how life works.
I see a kid reading this and going insane because is anxiety inducing at counted times, but it does not go farther than that to make its characters real humans that aren't scumbags, and when you see through that it loses its impact and feels corny and cheesy bad people.