Even after losing her parents, the young calligrapher Mion Hazuki continued to pursue her art, and her popularity, coupled with her beauty, grew. However, as her popularity grew, various men began to approach her in subtle ways... Among them, the great master of the calligraphy world, Sagawa, takes drastic measures to obtain the rumored secret book of the Hazuki family's secret secret book, "Midara Sumi"... Despite being a sheltered girl, this licensed busty girl with an overly developed voluptuous body and an undeveloped anus not only loses her secret book, but also becomes the prey of wild beasts...