My Neighbor Seki and Rumi's Phenomenon(2015)

My Neighbor Seki and Rumi's Phenomenon is an anime series about a student named Yokoi who sits next to the perpetually scheming Seki-kun in class. Seki spends every lesson orchestrating elaborate games and activities at his desk—from domino chains and strategic board games to model building and cat play—all while evading the teacher's notice. Despite her best efforts to stay out of trouble, Yokoi finds herself drawn into his antics, only to face the teacher's wrath when their games inevitably spiral. The series balances comedy with the tension of classroom mischief, as Yokoi struggles between curiosity and self-preservation while Seki's ingenuity never seems to run dry.