Betao Jōseki, also identified as Betao Joseki, is a green-haired male transfer student entering a new middle school. He wears glasses and actively seeks popularity and friendships in his unfamiliar environment. His primary social circle consists of two classmates: the eccentric Kuuki Yominashi, known for unpredictably derailing conversations, and the intensely shy Osage, who struggles with verbal communication.

Together, this trio navigates daily school routines, engaging in classroom activities and extracurricular scenarios. They participate in class representative discussions, debate unconventional actions like library cooking, and collaborate in a school production of Romeo and Juliet.