•Name: Kyoyama Kazusa •Academy: Trinity General School, 1st Year •Club: After-School Dessert Club •Age: 15 •Height: 155cm •Birthday: August 5th •Hobby: Eating desserts "normally" •Info: A member of the After-School Dessert Club. Along with Ibaragi Yoshimi, she is one of the two voices of reason and the straight-man (tsukkomi) of the group. Since Kurimura Airi is timid, Kazusa often tries to mediate, and since Yutori Natsu is eccentric and often talks about nonsense, Kazusa ends up in a frenemy-like dynamic with Yoshimi, who gives clear reactions when teased. When speaking with Sensei, she mixes informal and formal speech. She usually speaks informally but switches to formal speech when expressing gratitude or being polite. Despite her cool impression, she has a short temper. Specifically, when she is teased, when someone mentions her dark past from middle school, or when she gets angry, her unique illustration appears with her eyes shadowed and a vein mark (💢) popping up. She has even hit Natsu eight times for teasing her. She hates the nickname "Cath Palug" the most. She has a younger sibling, Guest, and though she acts tsundere, she takes good care of them.

•Name: Ibaragi Yoshimi •Academy: Trinity General School, 1st Year •Club: After-School Dessert Club •Age: 15 •Height: 146cm •Birthday: August 29th •Hobby: Participating in events, collecting limited-edition desserts •Info: A member of the After-School Dessert Club at Trinity. A girl like a violent small animal who has a complex about her short height and small frame. She always wants to be more mature, but since her thoughts show clearly on her face, she doesn't have much success. However, she smiles brighter than anyone when touring dessert cafes to taste limited-edition treats. She has a somewhat irritable personality and holds the voice of reason position alongside Kyoyama Kazusa. With her tsundere traits, her rewarding reactions that make her fun to tease, her height complex, her hatred of milk, and her poorly hidden affection for Sensei, she has great chemistry with Sensei and those around her.

•Name: Kurimura Airi •Academy: Trinity General School, 1st Year •Club: After-School Dessert Club •Age: 15 •Height: 160cm •Birthday: January 30th •Hobby: Searching for dessert shops, tea parties •Info: A student in the After-School Dessert Club at Trinity General School. She is an ice cream lover, specifically a "Mint-Choco Dan" member who loves mint chocolate. She has the most gentle and mild personality in the club. Aside from her love for mint chocolate, she has no particularly strange traits, but due to her weak-willed nature, it's part of her daily life to get caught up in the antics of the other club members. Airi's unique trait is that she is a very ordinary and realistic teenage girl compared to other students in Kivotos. Because of this, she and Mari are the characters who best represent Trinity's image as a school for gentle young ladies. While there are other mild-mannered characters in Trinity, most have an extraordinary side upon closer inspection—like the super-strong Hinata, Faust Hifumi, or the elusive Serina.

•Name: Yutori Natsu •Academy: Trinity General School, 1st Year •Club: After-School Dessert Club •Age: 15 •Height: 152cm •Birthday: December 4th •Hobby: Romantic things, contemplation •Info: A member of the After-School Dessert Club at Trinity, the primary troublemaker and a self-proclaimed romanticist. She has a habit of saying strangely philosophical things or comparing everything to desserts. She always troubles those around her with her eccentricities, but it stems from a pure heart that wants to share "romance" with everyone. Since her definition of "romance" is always changing, an outsider can't deny the impression that everyone is just getting "dragged into Natsu's pace." She is an eccentric character with a unique vocabulary, a slow way of speaking, and a tendency to perform odd antics. She serves as the mood maker and troublemaker of the club, and it's a daily occurrence for other members to get caught up in cleaning up the messes she makes. Despite this, unlike typical eccentric characters, she is very quick-witted and, though she can be mischievous, she is very considerate.