Through her AV experiences, Ayaka Mutou finds herself increasingly desiring more perverted acts. In her fifth work, she experiences true unprotected internal ejaculation with a man other than her husband. Though she thinks it's wrong, she removes the condom just a little, directly taking another man's cock into her vagina. The ultimate sense of taboo that can't be experienced with a condom further amplifies her pleasure, leading her to demand vaginal ejaculation even on ovulation days at home.
