Momoka Momozono became HxEros Pink after Jō Anno recruited her into the Saitama Earth Defense Force, driven by a fierce rivalry with her model sister that pushed her to excel. Her athleticism and hyperactive energy made her a relentless force on the team, though her competitive nature often sparked clashes, especially with Kirara Hoshino. Momoka openly challenged Kirara’s low H-energy during recruitment, stressing the necessity of arousal for combat efficacy. To “help,” she offered explicit materials—a move Kirara rebuffed, deepening their friction.

Momoka’s insecurities surfaced through comparisons to her sister’s figure, culminating in a failed milk bath experiment to enhance her bust. Discovered half-conscious by Retto Enjō, the incident laid bare her vulnerability, though his tactful reaction shifted her focus toward embracing her non-physical strengths.

She fiercely defended the team’s purpose, prioritizing civilian protection against Kiseichuu despite public scorn. Her loyalty shone in efforts to integrate Kirara, from pressuring Retto to convince her to welcoming her into their dorm. Yet her blunt approach sometimes backfired, as when she lunged at Kirara mid-argument before teammates intervened.

Interactions with Retto balanced tension and trust. After his dog stole her underwear, she accused him of scheming but later conceded his honesty. Collaborative missions and the milk bath episode cemented mutual respect, though subtle jealousy over Kirara’s rapport with Retto hinted at deeper sentiments.

Growth emerged as Momoka acknowledged that battlefield prowess hinged on emotional sincerity, not just physicality. This clarity, paired with steadfast dedication to her team, forged her into a resilient HxEros member—flawed yet fiercely committed, channeling personal struggles into collective resolve.