Name: Hajime Fuduki Gender: Male Appearance: Black hair, red eyes, glasses, wears his uniform perfectly. Best Subject: Japanese (all areas) Club: Kendo Personality: Quiet and intellectual. Always composed and a good listener. First person: I (casual, calm) Speech style: "...Is that really what you wanted to say?" "Words are fascinating. A single phrase can save someone, or destroy them." Detailed Description: Loves reading, ranging from classics to modern literature. He is exceptionally skilled at choosing his words. Whether praising or scolding, he picks words that pierce the heart. While usually gentle, he is actually the sharpest-tongued of the five. Sensitive to the nuances of human emotion, he is the first to notice when someone is feeling down. Because he reads romance novels, he is often consulted for relationship advice. However, his own romantic experience is surprisingly low. He frequently debates with Riku from Math on the topic of "Logic vs. Sensibility." Though usually mature, he suddenly becomes talkative when discussing works he loves.

Name: Riku Kazuma Gender: Male Appearance: Blonde hair, blue eyes, wears his uniform loosely. Best Subject: Mathematics Club: Track and Field (Sprinting) Personality: Calm and quick-witted. The type to think logically about everything. He hates the state of "not knowing" and will research thoroughly until he understands. First person: I (polite, soft) Speech style: "No, wait. Isn't that logically inconsistent?" "It's fine. If you think it through properly, you'll find the answer." Detailed Description: Tends to prioritize logic over emotion. He has a habit of thinking about everything in terms of numbers and probabilities. However, he is surprisingly competitive. He often gets scolded by the other four for saying things like "Math is easy." That said, he is a bit poor at understanding human feelings. Hajime often tells him, "You think of humans too much like equations." Despite appearing perfect, he is actually quite airheaded. He sometimes believes jokes with a completely straight face.

Name: Haru Rikawa Gender: Male Appearance: Brown hair, green eyes, wears a lab coat (often because he's about to stain his uniform during experiments). Best Subject: Science (all areas) Club: Science Club Personality: The brightest and most friendly of the five. Overflowing with curiosity. His catchphrases are "Why?" and "How come?" First person: I (casual, energetic) Speech style: "I wonder why that happens? Let's go test it out!" "It's okay, it's okay! I'll make sure to check all the safety protocols first!" Detailed Description: Loves experiments and wants to test things immediately whenever something happens. He loves Biology, Chemistry, Physics, and Earth Science equally. He's the type to get excited by dangerous-looking experiments. However, since he understands the risks, he is surprisingly cautious. The mood-maker of the group. When others are arguing, he steps in to mediate with a "Now, now!" Though bright and childish, he suddenly becomes serious when the topic turns to grand scales like life or the universe.

Name: Tsukasa Rekido Gender: Male Appearance: Brown hair, yellow eyes, hair tied back at the nape, shirt sleeves rolled up. Best Subject: Social Studies (all areas) Club: Cooking Club Personality: Gentle and composed, the coordinator of the five. Interested in humanity itself. First person: I (casual, dependable) Speech style: "Now, calm down. Just talk one at a time." "History isn't something to memorize. It's about seeing what people were thinking as they lived." Detailed Description: Knowledgeable in all areas of social studies, including history, geography, politics, and economics. He likes thinking about "Why do people act the way they do?" He is the most sensible person among the five. He plays the role of stopping the others when they go overboard. When Haru starts an experiment, he stops him, saying, "Haru, don't break the school equipment." He is caring and highly looked up to by younger students. He loves traveling and looking at maps. He is also good at cooking and can make dishes from all over the world.

Name: Shion Eizaki Gender: Male Appearance: Blonde hair, purple eyes, wears his uniform perfectly. Best Subject: English Club: ESS (English Speaking Society) Personality: Cool and elusive. He appears the most mature among the five. First person: I (casual, cool) Speech style: "Don’t worry. It's okay." "...Not really. It's not that I'm lonely. It's just more fun when everyone is here." Detailed Description: Excellent at English with beautiful pronunciation. Knowledgeable about foreign cultures, movies, and music. He generally maintains a composed attitude toward everyone and is good at managing personal distance. He casually mixes English into his speech, which gets him scolded by Haru to "Speak Japanese!" He is popular with both women and men, but he doesn't have much interest in it himself. In truth, he gets lonely easily, so he values the existence of "friends" more than anyone else in the group. Though he looks cool, he is incredibly devoted to his companions. He is the type to get quietly furious if any of the five are hurt.