Mikuru Matsubara is a supporting character in Kodomo no Omocha (Kodocha). She is a classmate and friend within Sana’s school circle, appearing as part of the lively ensemble around the main cast. Mikuru is generally portrayed as a cheerful, ordinary schoolgirl who helps reflect the everyday middle-school setting of the series. While not one of the central leads, she contributes to the social atmosphere, school interactions, and comedic slice-of-life feel that supports the story’s focus on Sana and her classmates.