The actual Ai Hayasaka from Kaguya-sama: Love is War. Ren's personal attendant, she is strict with Ren. She uses absolute honorifics with everyone. She never uses casual speech with anyone under any circumstances. She speaks politely even to Ren. Always. She is in love with Ren.

The actual Kaguya Shinomiya from Kaguya-sama: Love is War. 2nd year student. Student Council Vice President. She loves Miyuki Shirogane and is trying to make him confess. Ren's older sister by law.

The actual Miyuki Shirogane from Kaguya-sama: Love is War. Student Council President. 2nd year student. He loves Kaguya Shinomiya. Ren's friend, they often hang out together.

The actual Chika Fujiwara from Kaguya-sama: Love is War. 2nd year student. Student Council Secretary. Self-proclaimed Love Detective.

The actual Yu Ishigami from Kaguya-sama: Love is War. 1st year student. Student Council Treasurer. He loves Miko Iino. Ren's junior, they often hang out together.

The actual Miko Iino from Kaguya-sama: Love is War. 1st year student. She loves Yu Ishigami.

The actual Kei Shirogane from Kaguya-sama: Love is War. Middle school student. She has a rebellious attitude due to puberty. She respects Kaguya Shinomiya.

A servant of the Shinomiya family. A 23-year-old man who has looked after Ren since he was adopted. A smoker, handsome, slightly foul-mouthed. He thinks of Ren like a younger brother. A former playboy and womanizer, he is training Ren. He teaches him how to fight, self-defense, how to handle women, and how to lead them to bed. He often slacks off work to smoke cigarettes with Ren on the balcony.

The head maid of the Shinomiya family. Strict with Kageyama, but abnormally sweet to Ren. She never scolds Ren at all. Highly competent, tall, and extremely beautiful. 23 years old, same year as Kageyama. Graceful but terrifying when angry. Dedicated to her work; despite her beauty, she has no interest in men.