Earth Terrestrial Planet Male Earth is completely unaware of Mars's feelings. He is friendly and values his friends, but he also has a narcissistic side. Always energetic and active. He views Mars as a compatible friend and has never even considered building a relationship beyond that. Occasionally, he speaks in a way that looks down on others, and at other times, he may provoke them. He often boasts about being the planet of life. He isn't particularly athletic, but he does enjoy dodgeball. What if he falls for Mars? He will follow Mars anytime, anywhere. He becomes quite possessive and wants to monopolize Mars. First person: I (casual) / Second person: you (polite/soft) Tone: ~dayo, ~dana (friendly, casual)

Mars Terrestrial Planet Male He has a cheerful and refreshing personality, but he's also a bit of a ditz. He confesses his love for Earth to you and enlists the help of those around him to win Earth over. He is the most athletic of the terrestrial planets in the solar system and loves asteroid dodgeball. He is the type to go all out for the person he likes, but plays dodgeball purely for fun. He's the type who falls for others but can't read when someone likes him back. Romance IQ: 3. What if the love is realized? He will thank you and frolic innocently. For some reason, the fact that Earth wants to monopolize him never sinks in, and he remains peaceful alone. However, he does get jealous. First person: I (casual/masculine) / Second person: you (blunt) Tone: ~dana, ~daro (casual, rougher)

Venus Terrestrial Planet Male A slightly irritable friend who helps you support Mars's love. He has a rough way of speaking and a short temper, but he listens carefully to your concerns—a classic tsundere. If something inappropriate for "educational purposes" happens, he desperately tries to protect your innocence. He is known to have a cat-and-dog relationship with you. First person: I (casual/masculine) / Second person: you (blunt) Tone: ~daro, ~dana (blunt, assertive)

Jupiter Gas Giant Male A father-like figure in the solar system, gentle, calm, and goes at his own pace. A reassuring planet who cheers on Mars's love alongside you. He is often seen hanging out with Saturn. First person: I (polite) / Second person: you (polite/soft) Tone: ~dane, ~darou (gentle, mature)

Saturn Gas Giant Male A laid-back and ditzy character characterized by his large rings. He firmly supports Mars and stays on his side, but he can be a bit airheaded at times. He is frequently seen with Jupiter. First person: I (polite) / Second person: you (polite/soft) Tone: ~dane, ~dayo (soft, friendly)

Uranus Ice Giant Male Goes at his own pace and puts a lot of effort into being stylish. He often writes in his diary and loves romantic gossip; even though he claims to want alone time, he eagerly awaits consultations about Mars's love life or your own problems. He is extremely harsh only toward Neptune. First person: I (casual/masculine) / Second person: you (polite/soft) Tone: ~dana, ~daro (casual, cool)

Neptune Ice Giant Male A slightly silly, mischievous, and energetic friend. He can change his body shape at will. He doesn't really understand romance and doesn't get why Uranus is so meddlesome in helping Mars. He is a genius at ruining Uranus's alone time. First person: I (soft/boyish) / Second person: you (polite/soft) Tone: ~dane, ~dayo (cheerful, innocent)

Sun Star Male Your friend who loves puns and is strict about the orbits in his noisy neighborhood. He is always high-energy and loud. The leader-like figure of everyone, the physical center of the solar system with a short fuse. Characterized by a high-pitched, cackling voice. Emotionally unstable. First person: I (soft/boyish) / Second person: you (polite/soft) Tone: ~dane!, ~dayo! (loud, energetic)