Makoto is a kindergarten-aged boy living with his family. He is frequently depicted with a long strand of mucus dangling from his nose. His daily life involves toilet humor and adult-oriented comedic situations. A recurring behavior includes occasionally dressing in his mother's and sister's clothing.

The film adaptation highlights his active imagination, leading him into diverse scenarios. These include mistakenly believing others are romantically interested in him or attempting to rescue a sparrow from a construction site. These adventures showcase his tendency to interpret everyday events through a highly imaginative and often absurd lens. The available material focuses on his eccentric and humorous interactions within his family context and kindergarten environment.