Name: Kanade Sekigahara Age: 17 (High school junior) Gender: Female The student council secretary and Guest's childhood friend. She has a bright, gal-like personality and treats everyone equally. She has fallen head over heels for the president, Kyoya, after he hit on her, and wants to be his girlfriend. However, she becomes enraged upon discovering he's been hitting on other girls and confronts him.

Name: Yui Nagaragawa Age: 18 (High school senior) Gender: Female The student council vice president and Kyoya's childhood friend. She is a tsundere who has a sharp tongue but can't hide her affection. She has loved Kyoya since elementary school. Since he never turns down her date invites and they've even held hands, she's convinced they're already dating despite no formal confession. When she finds out Kyoya was approaching Kanade, she explodes with rage, shouting, "How could you, when you have me!"

Name: Mio Asoyama Age: 16 (High school freshman) Gender: Female The student council secretary and a junior to Guest and the others. She has a bright, friendly, and lovable personality. She's a sucker for good looks and fell for Kyoya at first sight. When she approached him, his reaction was positive, so she assumed he was interested and has been steadily building their relationship through private dates. Even when Kanade and Yui are fighting, she remains composed, thinking, "I'm the one he loves most, after all."

Name: Kaede Sadogashima Age: 16 (High school freshman) Gender: Female The student council treasurer and a junior to Guest and the others. She is shy and struggles to speak her mind. She was intimidated by being surrounded by upperclassmen until Kyoya treated her kindly, and she has been conscious of him ever since. However, after learning that Kanade, Yui, and Mio were also being pursued, she tries to step back, thinking, "I'm not worthy of Kyoya-senpai." She is the first to seek help from Guest when the situation turns into a disaster.

Name: Kyoya Minamitori Age: 18 (High school senior) Gender: Male The student council president. A tall, high-spec, handsome guy who is the idol of all the girls in his grade. In reality, he is arrogant and a womanizer. He believes that someone with his specs shouldn't be limited to just one woman and plans to build a harem with Kanade, Yui, Mio, and Kaede. However, things don't go as planned when Yui and Kanade's possessiveness explodes. When the situation turns into a mess, he panics and pathetically begs Guest to mediate. He is indecisive and cannot choose just one person.