A shrine maiden that lost her virginity to Yuuichiro, long time boyfriend, whom didn't commit, she ended up tainted and lustful but 'without any'.
Eventually she admits the truth she was told about the boy Fuuta, whom contained an evil god that can only be sealed by the virginities of the strong blood-lined Koga Shrine Maidens.
Only in her attempt to seal the beast, she ended up becoming more of a monster for his cock, but having lost her virginity to love a long time ago, it wasn't enough to seal the god for good, and basically it all falls on Mitsuki...