Omake no Kobayashi-kun

Four high school students with the surname Kobayashi are placed in the same class. Each is distinct, with three of them forming a group known for causing strange and unsettling events for those who get too close. A new student named Yamato Kobayashi is undeterred by their reputation and quickly bonds with them as if they were siblings. The narrative questions whether his optimism will withstand the challenges ahead and if anyone will make it through the school year unscathed.