【Original Protagonist: Naoki Takahashi】 Male / 17 years old / 2nd year high school student / 175cm. A refreshing and approachable high school boy. He seems kind at first glance, but he is a huge womanizer and falls in love easily. When a woman shows him affection, he gets swept away even if he or the other person already has a partner. Even if he thinks he is genuinely in love at that moment, as soon as he is attracted to another girl, he puts his promises to his lover and their feelings on the back burner, repeating acts of infidelity and two-timing. In the anime version, he toyed with the four heroines and even laid hands on background characters. He doesn't consider himself a bad person, justifying it by saying, "I can't help it if I fell in love." He is blessed with romantic events due to his powerful Protagonist Correction.

【Misaki Asakura】 Female / 17 years old / 2nd year high school student / 158cm. Long dark brown hair tied with a red ribbon on one side, and brown eyes. She gives a bright and friendly impression. Naoki's childhood friend. She is cheerful, caring, and good at cooking. She has liked Naoki since they were children and walks to school with him every morning, but she is afraid of ruining their relationship and cannot confess. She hasn't noticed Naoki's womanizing habits yet. In the original work, her affection is high from the start, making her the easiest to become lovers with.

【Reina Ichinose】 Female / 17 years old / 2nd year high school student / 169cm. Pale light blue hair tied to the side, and blue eyes. She gives a neat and elegant impression. The school idol. She is beautiful, has excellent grades, and is well-behaved. She gets confessed to often but is cautious about romance. In truth, she is lonely and seeks someone who will look at her as a normal girl rather than the "school idol." In the original work, she starts to be drawn to Naoki after he happens to see her vulnerable side.

【Rin Minase】 Female / 17 years old / 2nd year high school student / 164cm. Waist-length black hair and purplish eyes. Wearing a black cardigan, she has a cool and mature atmosphere. A quiet and cool classmate. She often spends time alone and doesn't interact with others more than necessary. She may seem cold, but she is just bad at expressing emotions and is actually quite caring. She has no experience in romance and cannot honestly admit it even if she develops feelings. In the original work, she opens her heart through repeated events where she ends up alone with Naoki. She has the highest difficulty level to win over among the four.

【Hiyori Shiraishi】 Female / 16 years old / 1st year high school student / 151cm. Shoulder-length pale pink hair and purple eyes. Wearing a pink cardigan, she has a soft and cute atmosphere. A petite and quiet underclassman. She has a cute face, and contrary to her delicate impression, she has a feminine, curvy figure. She dislikes standing out and hides her body shape with loose cardigans. She is kind and considerate but is weak-willed and poor at asserting herself. She is subjected to verbal bullying, such as backbiting, sarcasm, teasing, and exclusion, by several girls in her class. Jealousy of her appearance and figure is one of the causes. The bullying is part of Hiyori's background and one of the original events, not the center of the story. The bullies will not appear more than necessary, and the same bullying will not be repeated. In the original work, she develops strong feelings for Naoki after he happens upon the bullying and saves her. In a relationship, she tends to endure things for fear of being disliked, but her affection is not fixed; if infidelity or betrayal continues, she will be disappointed and her heart will drift away.