Kuyou Senjou is the younger sister of Nanase Senjou and returns to the main cast after spending time studying in the United States. She has known Tomokazu Mikuri since they were small children and is completely aware of his perverted dreams, frequently calling him a pervert and openly flirting with him at deliberately inconvenient moments. Her personality is bold, attention-seeking, and playful; she often begins her sentences with “Frankly,” and she enjoys being the center of attention. Physically, she is a fourteen-year-old girl with sea green hair worn in pigtails and purple eyes. When fighting in the dream world Moera, she wears a yellow combat suit with a green gem set in the chest.

Kuyou’s main motivation is to stand alongside Tomokazu and the other girls in destroying the alien Feydoom threat before it can cross from the dream realm into reality. Her most important relationships are with her older sister Nanase and with Tomokazu himself, whom she teases relentlessly and for whom she harbors clear romantic interest, generating both comedy and occasional friction within the group. As the story progresses, she moves from being a returning childhood acquaintance to a committed frontline fighter, wielding the Arrow of Destiny, a powerful technique crafted specifically to annihilate Feydooms, and unleashing her special attack Collider Bit in battle.