Japanese aphrodisiac, Higo Zuiki. Saponin stimulates the vaginal mucosa and gives sexual pleasure... Dissolve a generous amount of this in the hot water of the open-air bath and wait for female customers. Are you warmed up enough? Your uterus is tingling, right? When you visit the girls who are so horny that they masturbate in their rooms at night, they squirt even though they don't want to, and in the end they beg for a creampie!