In "Blue Period 12," Yatora Yaguchi returns to campus for his second year, only to be greeted by a cascade of surprises that will shape his artistic journey and challenge his perception of the path he's chosen. The familiar surroundings of his academic life take on a new dynamic as old friends resurface, and Yatora finds himself surrounded by a flurry of new connections, both in the form of fellow students and instructors.

As he navigates the complexities of his assignments and encounters new artistic challenges, Yatora undergoes a continuous evolution, further embracing the transformative power of creativity.

However, a pivotal moment occurs when Yatora stumbles upon an artists' commune. This encounter prompts him to question the compatibility of his artistic journey with the environment at Tokyo University of the Arts (TUA). The commune introduces an alternative perspective on art, fostering a sense of community and unconventional approaches that challenge the structured and formal education Yatora has been accustomed to. The questioning of whether TUA is truly the right place for him marks a crucial juncture in Yatora's artistic exploration.