|Voiced by|| Asuka Tanii (Japanese)|
Ema Kogure (Japanese) (Episode 223-236)
Kristi Bingham (Funimation)
|Age||13-14 (Estimation, around Natsumi's age.)|
|Species / Type||Pekoponian|
Shimotsuki literally means "frost moon".
Shimotsuki is the traditional Japanese name for the month of November.
Yayoi is the traditional Japanese name for the month of March.
Her friend's name, Satsuki Shiwasu, is also formed from two traditional month names.