COTE: Silabus Sang Pembunuh, Permainan Baru Koroizumi Seiji

Rather than moving on to the afterlife, the soul of the Mach-20 being awakened inside the body of a human teenager named Koroizumi Seiji.
He now found himself on an ''Earth'' that was familiar yet distinct: a world devoid of the apocalyptic threat of a shattered moon, but teeming with political intrigue and psychological warfare.
Yet, beneath his quiet and reserved demeanor, the soul of a teacher remained very much alive, yearning for new ''lost sheep'' to guide.
He instilled a fierce will to survive within the bullied Karuizawa Kei; halted Ichinose Honami's moral descent; forged a quiet, intellectual bond with Shiina Hiyori; shattered Horikita Suzune's towering ego to help her carve her own path; and ''tamed'' the monster lurking inside Kushida Kikyo.
Now, a new chapter in his life officially began with his acceptance into the Advanced Nurturing High School (Koudo Ikusei High School).
Through Ritsu's meticulous analysis, Seiji discovered that this elite institution's system-built on absolute competition and the doctrine of psychological pressure-bore a striking resemblance to Kunugigaoka.
A surprise awaited him when Seiji, despite achieving perfect entrance exam scores, was assigned to Class 1-D, the lowest tier reserved for students deemed ''defective.
And so, the lessons at Koudo Ikusei officially commenced.
A fiercely arrogant political terrarium had just invited a legendary ''monster''-one who had once leveled mountains and shattered the moon-to come out and play