Keitaro Momozono, husband to Ayumi and father to Love Momozono, balances his career as a sales manager for a wig company with his familial role as a stabilizing force. When former Labyrinth operative Setsuna Higashi defects, transforms into Cure Passion, and seeks redemption, Keitaro and Ayumi adopt her, expanding their family to include a second daughter. Ayumi, who works part-time at a supermarket, shares both her biological daughter’s aversion to spinach and her warmth with the newly welcomed Setsuna. Keitaro’s calm, supportive presence facilitates Setsuna’s integration into their household, anchoring her transition from antagonist to cherished family member through quiet consistency and unwavering acceptance.