Ema-chan previously challenged herself with service play, and now she's honed her skills as a hostess using that experience. This time, she showcases her advanced licking techniques, satisfying customers within Japan's unique adult entertainment culture. However, since actual sex is prohibited in Japanese brothels, she experiences a bit of culture shock while following these rules. Amidst this, a new development unfolds as she secretly allows full intercourse, driven by her own desire to feel pleasure too.