Sanada North High School is an all-boys institution where the mundane is made magnificent through the sheer power of boredom. The story follows the "ordinary" lives of three best friends: the skeptical straight-man Tadakuni, the over-imaginative and dramatic Hidenori, and the loud, energetic Yoshitake. Eschewing the typical high school tropes of epic romances or sports championships, the series focuses on the absurdly relatable moments of teenage boyhood—from trying on a younger sister's skirt out of curiosity to telling increasingly ridiculous ghost stories and engaging in overly dramatic RPG roleplay in the middle of a public park. Each episode is a collection of vignettes that hilariously lampoons the awkwardness of growing up.