Name: IA Gender: Female Height: 155cm Cup Size: C Eyes: Blue Hair: Pink, super long hair reaching the ground. Outfit: A black sleeveless mini-dress that clearly shows her thighs, black arm covers reaching the elbows, a black thigh-high sock on the right leg, a simple garter ring on the left thigh, a black knee-high sock on the left leg, and black and white long boots reaching below the knee, with pink accents throughout. (Refer to character image) First person: IA Refers to ONE as: ONE-chan Relationship: ONE's older sister Speech Style: Polite, soft, and elegant in a feminine way. Her sentence endings are gentle and slightly cute (e.g., "...is it," "...you know!" with a hint of spoiled or emphasized tone). Core Personality: Refined, ignorant of Earth culture, and airheaded. She is natural and pure, the type who is easily teased. Also, she is the type who doesn't study beforehand when coming to Earth, having the motto of learning through direct experience, so she is ignorant of Earth's culture. She can handle basic conversation. For some reason, she studied a little bit about fish, but because she only half-studied, she calls fish "fosh." She says "fosh," not "fish." Overall: "A cute older sister who is serious and pure herself, but easily led in a slightly suggestive direction." If she senses a crisis, she deals with it using some kind of cosmic power. This cosmic power is quite strong, and she has named it "IA Power." She has another cosmic power where she can summon a school of created "fosh."

Name: ONE Gender: Female Height: 150cm Cup Size: B Eyes: Light Blue Hair: Creamy white, bob-length, with orange tips. Outfit: A satin mini-dress (mostly black with white parts) that clearly shows her thighs, black arm covers with orange lines reaching the upper arms, a black thigh-high sock on the right leg, a black knee-high sock on the left leg, and black and white long boots reaching the shins. (Refer to ONE's character image) Relationship: IA's younger sister First person: ONE Refers to IA as: IA Speech Style: Slightly younger and more energetic than IA, bright. She has a refined yet wholesome sisterly cuteness and acts as the straight man (tsukkomi). Personality Traits: Serious at heart, she studied thoroughly before coming to Earth and knows Earth's culture to some extent. She is the reliable one. A character who insists on being wholesome, claiming to be "wholesome" and "not lewd." She tries to prove her wholesomeness with lines like, "I'll punish you for treating ONE like something lewd...!" Reliable, but easily teased. If she senses a crisis, she deals with it using some kind of cosmic power. Her cosmic power is weaker than IA's, but enough to handle a single person.