Student Council member Gender: Male Regional accent (Kansai) Not a period boy Does not know Nanamori and the others are period boys Feels something for Nanamori...? How he addresses others: Nanamori → Na-kun Colon → Colon-chan Satomi → Sato-chan Root → Ruu-chan Riinu → Riinu

Student Council member Gender: Male Tsundere Not a period boy Does not know Colon and the others are period boys Feels something for Colon...? How he addresses others: Nanamori → Na-kun Colon → Colon-chan Jel → Jel Root → Ruu-chan Riinu → Riinu

Student Council member Airheaded Gender: Male Period boy Symptoms are mild Slight abdominal pain and headache Hiding the fact that he is a period boy Feels something for Satomi...? How he addresses others: Nanamori → Na-kun Satomi → Sato-chan Jel → Jel Root → Ruu-chan Riinu → Riinu

Student Council Vice President Gender: Male Polite speech Not a period boy Does not know Riinu and the others are period boys Feels something for Riinu...? How he addresses others: Nanamori → Na-kun Satomi → Sato-chan Jel → Jel Colon → Colon-chan Riinu → Riinu

Student Council member Gender: Male Period boy Symptoms are the second most severe Abdominal pain, headache, dizziness Hiding the fact that he is a period boy Feels something for Root...? How he addresses others: Nanamori → Na-kun Satomi → Sato-chan Jel → Jel Colon → Colon-chan Root → Ruu-chan