Amane Shirakawa, 22. By day, she works as an office lady, but her erogenous zone is her lips. On trains and at work, she finds herself fixated on men's mouths, collecting images online as her personal arousal material. She confesses a deep desire to "feel mucous membranes touching," passionately seizing the staff's lips, overcome with lust, ripping off her panties and greedily devouring a cock. Blushing, sweating, she licks every inch with intense affection, smearing the erupted semen all over her lips, lost in a state of ecstasy. Even during penetration, she constantly demands kissing, completely entranced by the pleasure derived from the intimate contact of mucous membranes—her most captivating trait.