Nobody expects a show about a fifth grader who looks like a high schooler to be this sharp. The comedy lives in the gap between what people see and what's actually happening, every interaction a small, perfect collision of assumption and reality. It asks nothing from you except to watch a kid navigate a world that refuses to believe he's a kid, and somehow that's enough.

Atsushi Miyagawa is still in elementary school, yet at 180 centimeters he passes for a grown man, while his seventeen-year-old sister Atsumi stands just 137 centimeters. The contrast keeps creating awkward situations wherever they go. People treat Atsushi as an adult even though he acts his age, and Atsumi struggles to persuade anyone that she really attends high school. Atsumi continues looking after her younger brother, and her close friend Sayo remains infatuated with Atsushi's mature looks. This third season is a short-format comedy about two siblings whose appearances never match who they actually are.