"Teach me, what is normal?" One day after school, the monitor Ryosuke witnessed the sex scene of Kanzaki, a school figure named Alpha, and his object was the troubled child Aiba. Ryosuke, who knows the secret of the two, has been involved in a twisted relationship since that day...? This is an era when Omega, who is easy to conceive, is being worshipped after the decline in birthrates has intensified. But behind that is an unimaginable fact...