Rikka, Chiyo, Sekine and Tsubasa seem like regular middle-school girls, but they all have their own secrets.
Time of the month?
ذلك الوقت من الشهر؟
Diese Zeit im Monat …?
¿El ciclo lunar…?
¿El ciclo lunar…?
Ses lunes ?
Il ciclo lunare?
Época do mês?
Время месяца?