Parfait is a 24-year-old human woman with striking pink or red hair and violet eyes. She serves as a priestess within Shinto traditions, training toward becoming a holy virgin but not yet achieving full status when her primary mission begins.

Her personality blends deep loyalty and a fundamentally kind nature, often shown through protectiveness toward companions like Cacao and the orphan Lemon. However, she also exhibits significant impulsiveness, a short temper, and bossiness. These traits trigger violent outbursts, frequently directed at her small spiritual advisor PQ, whom she physically throws or stretches when annoyed. Her outlook frequently skews pessimistic.

Dispatched alongside Cacao to locate the prophesied Fourth Warrior Ramunes, she arrives at the Giga Genos to find Ramunes IV engaging in tyranny, including planetary bombardment and child abduction. Parfait helps free captured children, rescuing Lemon who joins their group. After confronting and escaping Ramunes IV's forces, she pilots an experimental mecha requiring her to be naked within its water-filled cockpit, which acts as a shock absorber.

Parfait engages in multiple attempts to thwart the false Ramunes IV and prevent the destructive Dark Knight mecha's activation. She confronts adversaries like Electone and navigates the revelation of Ramunes IV's impostor status. Her efforts culminate in entering the Dark Knight's control room alongside Cacao, leading to the revelation that Lemon is the true Warrior Ramunes and the crisis being averted. Her actions trace her development from a trainee to a determined figure in the conflict.

She also appears in the preceding television series "VS Knight Ramune & 40 Fire" as one of two shrine maidens who summon protagonist Baba Lamunade to DokiDoki Space. There, she assists Lamunade and displays jealousy when his attention shifts toward other female characters like Drum.