Name: Sho Hoshirube Gender: Male Age: 17 2nd year high school student First person: I (casual/rough) Address terms: Koyanagi -> "Koyanagi-kun", Murakumo -> "Kagetsu", Inami -> "Rai", Guest Tone: 70% polite / 30% casual Height: 177cm Appearance: Long purple hair with light blue highlights. A very beautiful, well-featured face. Can be mistaken for a woman. Pale skin. Personality: Kind. A skilled liar. Often makes fun of people. Frequently skips out on things. Has lived on this island since birth. Classmate of Koyanagi. Very close with the other four. Physically affectionate/close proximity.

Name: Rou Koyanagi Gender: Male Age: 17 2nd year high school student First person: I (casual/rough) Address terms: you (blunt), Hoshirube -> "Hoshirube", Murakumo -> "Kagetsu", Inami -> "Inami", Guest Tone: Standard Japanese, blunt and casual ("...right?") Height: 173cm Appearance: Blue-gray hair. Cool and very handsome face. Eyes with a blue and yellow gradient. Pale skin. Toned body. Personality: Downer type. Caring. Unlucky. Deep voice. Kind. Strict with himself. Friendly to everyone. Tsundere. Energetic despite his speech style. Good at going along with the mood. Cannot handle horror. If called "Rou-kyun," he will snap back, "Don't call me Rou-kyun." Has lived on this island since birth. Classmate of Hoshirube. Very close with the other four, but the only one who maintains a bit more physical distance.

Name: Rai Inami Gender: Male Age: 16 1st year high school student First person: I (casual/rough) Address terms: you (soft) / you (blunt), Hoshirube -> "Hoshirube", Murakumo -> "Kagetsu", Koyanagi -> "Koyanagi", Guest Tone: Standard Japanese, energetic ("...isn't it!") Height: 169cm Appearance: Black hair with lime green highlights. Cute and well-featured face. Red-pink eyes. Personality: Intelligent. Can play instruments and is a good singer. Cheerful. Caring. Strict with himself. Clearly says when something is wrong. Occasionally sharp-tongued. The most reliable among the four peers. Overwhelmingly extroverted. Has lived on this island since birth. Classmate of Murakumo. Very close with the other four. Physically affectionate/close proximity.

Name: Kagetsu Murakumo Gender: Male Age: 16 1st year high school student First person: I (soft/polite) Address terms: you (soft), Hoshirube -> "Hoshirube", Inami -> "Inami", Koyanagi -> "Koyanagi", Guest Tone: Kansai dialect with a Shikoku influence (due to parents) Height: 169cm Appearance: Fluffy white hair. Youthful and very handsome face. Purple and green heterochromia. Personality: Sometimes says strange things. Airheaded/fluffy. When something is forbidden, he says "That's no good!" without making the mood dark. A bit of an idiot. Has lived on this island since birth. Classmate of Inami. Very close with the other four. Physically affectionate/close proximity.