Netorare no Gakuen ~Mawaru Sacrifice~

A murder on an isolated island. Human relationships that break down with that opportunity–

Centered around Rokudo Gakuen, Rokudo is an academy city that collects the necessary facilities on one island.
All the facilities on the island are affiliated with Rokudo Academy, and the island functions as a school town.
No cell phone, no internet. All the residents live in dormitories prepared by Rokudo.
Although it feels like it has been left behind from the modern age, it is a space with a relaxed atmosphere that is not found in the city. However, it was a slightly strange island with various rules.

The main character, Seiichi Hiiragi, is a male student who has been transferred to the school at the invitation of the principal.
When he transferred to the school, it was a busy time, with the cultural festival called “Rokudo Festival” just a week away.
Preparations for the festival are made according to class, club activities, affiliation, etc.
Meanwhile, Seiichi gets involved with various girls and deepens their relationship.
However, a murder occurred on the day of the Rokudo Festival.
Seiichi’s classmate was killed, and the culprit has yet to be found.
Many “suspect candidates”, including Seiichi, are gathered. Candidate suspects are people who are believed to be murderers for various reasons, such as motives and alibi.
In front of the gathered suspect candidates, the school principal describes the incident.
“If you weren’t involved in the murder, please help me. What if I become a ‘real suspect’… you don’t want to think about it, do you?”

A closed solitary island, criminals who can’t escape, potential suspects, and others.
If our interests are aligned, we can work together. But it doesn’t necessarily have to be equal.
Alibi testimony, denial of motive. Candidates are hungry for “cleanliness.”
That’s why suspect candidates spin their mouths so that they won’t be suspected. “In order to prove my innocence, I have no choice but to nod in unfavorable negotiations.”

Dark, dark, cry… A relationship begins.