Hametsu no Yuuwaku – Episode 1 (ES)

Itsuki Hirahara appears as the ultimate cool, aloof honors student in public, hurling sharp insults and disdain at her insecure teacher, Yohito Osumi. But in private, the childhood friend reveals her true self: a clingy, affection-craving "oshikake" girl who aggressively pursues him. After losing her virginity to him unexpectedly, she blackmails him with the threat of exposing their secret to his parents, turning their relationship into a pushy "wife-like" arrangement.

After school, she visits his room, casually teasing his erection with her feet, then mounting him on the sofa for intense, bouncing cowgirl rides. Publicly merciless and verbally abusive, she privately waits obediently, strips eagerly upon his return, and melts into a sweet, moaning mess—begging for more with her whole body. Her healthy yet shameless eroticism, drenched in sweat and juices, showcases every lewd detail: thigh-clamping under-desk flashing, relentless grinding, and overflowing "dripping shame" as she arches in ecstasy.

Yohito agonizes over this dreamlike yet sinful bond, but a new "intruder" enters their hidden world, threatening to shatter the delicate balance of their addictive, body-entwined connection.