tripleaamin
All Star
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Mato Seihei no Slave
After his high school graduation, Yuuki Wakura realizes it has been five years since his sister's disappearance during a "Mato disaster." Throughout Japan, mysterious entrances have opened to a dimension called "Mato"—a demonic metropolis filled with disastrous monsters known as the "Shuuki"...myanimelist.net
Starting reading Mato Slave, which features the same author from Akame ga Kill. As given by the title and genre tags its an ecchi harem fantasy it gives you clear warning of the type of series it will be. But it surprisingly gives a solid amount of world building in the first volume. So if you aren't bothered by the fanservice it could be solid series, but again thats the caveat. Chapter 3 which was him getting blackmailed to become a slave of the sadist girl seems to be clear indicator how far it will go with the ecchi and fanservice.
Kyouka offers a strong first impression. Very strong willed and motivated with clear honorable goals, but had the unfortunate luck of the draw of her power. More so the negative consequences that come with it. The fact that the mc does feel guilt from it does show that maybe he could be a decent mc.
Mato basically can be seen as a form of hell that protects the human world. Interesting enough in region of Mato there is a defense corp. So basically there is a defense force squad assigned to each of the 8 regions, which assuming protects an important middle region. Kyouka's main goal is revenge so her motivation is clear. The ending of the volume ends and what seems very likely to be his sister who senses his presence. Would be surprised if that wasn't her.
It always comes in how the author puts it in. 3 volumes in yes there is plenty of ecchi fan service. But at the same time these stuff don't take away the central part of the story.yeah, pretty much my words in the anime thread when I saw it was getting adapted.
I'll admit though, it's amazing how the more you read, the more the fanservice and ecchi things become more of a.... consequence? The overtones there for actual reasons. You sorta stop seeing those parts as fanservice. Even what was at first "skimpy outfits" turned into really good art design. Cool art, cool powers, cool cast, cool fights, "shyt gets real and stays real" story.
It's honestly a solid series. Prolly gonna be popular, but polarizing.