Cotaro Yazawa

Cotaro Yazawa is one of Nico Yazawa's siblings.

Background
In No. 1 Idol in the Universe, it was revealed that Nico had three siblings, Cocoro, Cocoa and Cotaro. Like his sisters, Cotaro believed his older sister was the star of μ's.

Personality
Cotaro is the youngest among the Yazawa siblings. He's often seen with snot coming out of his nose and is also often seen holding a toy hammer.

Chronology
Season II =

Trivia

 * Cotaro is the only Yazawa sibling not to appear in Love Live! School idol diary and its manga adaptation.
 * The 25 on his shirt is a reference to Nico's name also being read as 25.
 * Cotaro is currently the only human male in the series to have his face revealed and to have a speaking role.