Content warning for the book: suicidal ideation, gory descriptions of severed body parts, on-page bullying.

Shun, Hiroshi, Takuro, Mika, Anna, and Takeshi are all students at the same middle school. Takuro is one of the most popular kids at school. He's also a bully who may have been involved in a past student death and who is currently tormenting Shun. The few bright spots in Shun's life are the computer game he's creating in his spare time, his friend Hiroshi, who's smart and doesn't seem to care what anyone thinks of him, and Anna, the class president and one of the few people who's friendly towards him and encourages him. Mika and Takeshi are Takuro's friends (or, more accurately, his lackeys), although they're not usually involved in the worst of the bullying. Takeshi is a coward, and Mika secretly wishes her emotionally distant parents would spend more time with her.

One evening, Takuro, Takeshi, and Mika cart some boxes over to an old mansion that Takuro's father supposedly bought. The mansion, now nicknamed the Jailhouse, was supposedly last inhabited 20 years ago by a young couple and their daughter, who used a wheelchair. Shun, Hiroshi, and Anna all end up going inside with Takuro, Takeshi, and Mika, and the six kids suddenly find themselves trapped in what appears to be a haunted house. If they can't figure out how to escape, they may all end up as food for the giant blue monster that roams the halls.

I haven't played any of the Ao Oni game versions, although I did watch parts of a few "let's play" videos. I didn't really expect all that much from this, but it actually wasn't bad. I'm curious as to the intended audience, though - it read like a Middle Grade book, and yet included gory scenes that would have been a better fit for older readers.

As seems to be the case with pretty much every J-Novel Club title I've tried so far, the writing was occasionally awkward and clunky. One example:

"Shun noticed that the bags under her eyes - something he ordinarily found charming about her - were darker than normal." (34)

This sentence is structured in a way that makes it seem like Shun found the bags under Anna's eyes to be charming, when in fact it was probably her eyes that he found charming.

The overall story might have been scarier had the writing been better, but there were still parts that I thought worked extremely well and were genuinely creepy. My top two favorite moments were the "this is why you can't hide in a closet forever" scene, which featured a really effective use of illustrations, and one of the last deaths, when the few survivors tried to figure out whether the person was still alive (even though they almost certainly were not, and it was foolish to check).

Takuro was 100% horrible - of all the characters, he was the one I was most hoping would end up dying. Takeshi didn't really make much of an impression on me, Hiroshi struck me as being fairly creepy (although it turned out that there was more going on than I realized), and Anna was annoyingly underutilized. I cared most about Shun, who'd been ground down by Takuro to a depressing degree, and Mika. Yes, Mika had opted to side with a sadistic bully, but she'd done so because she'd convinced herself that he could provide her with the love her family didn't give her. I felt bad for her, even though her willingness to forgive Takuro just about anything made me grit my teeth a few times.

The ending was...weird. Most of the book was slight creepiness, gore, and occasional appearances from a ridiculous "blueberry-colored" monster. Then it all took a sudden "very special message" turn at the end, morphing into a suicide prevention story. This would have been fine, although heavy-handed, but the steps the story took to get there felt like a cop-out. I had been wondering how the series was going to continue, despite everything that had happened, and I wasn't pleased with the answer.

Still, I liked this well enough to want to continue on. I also tried to hunt down some "let's play" videos of Ao Oni version 3.0, the one this book was based on. Unfortunately, I have yet to find one done by someone whose voice/sense of humor I'm able to stand.

Extras:

• Prior to the start of the book, there are a few manga pages depicting a later scene.
• Several black-and-white illustrations.
• An afterword written by the author.
• A brief note written by the illustrator.
• Two pages of the illustrator's initial character designs.
• A couple color illustrations.

(Original review posted on A Library Girl's Familiar Diversions.)