S1 No.1 Style presents Aika, a dominant, aggressive woman who turns the tables on authority figures by seducing and dominating them sexually. When faced with lewd commands from her boss like "Let me touch your tits" or "Can't you even obey a customer?", Aika refuses to submit—instead, she takes control with a commanding presence. Even while being forced into services like breastfeeding or handjob, she maintains dominance. She submits obediently when a patient in recovery mounts her in cowgirl position and mocks her provocative posture. She performs dutiful titty fucks on lustful fathers and even drinks down both alcohol and her own juices when face-sitting on a heavily intoxicated client. Aika's sex style revolves around controlling her partner throughout, highlighting her powerful allure and assertive charm.