With the advancing technology, man is able to create realistic man-made humanoids. One variation of such is the virtual brothels, one of which is called Karma. Such places are so expensive that spending one night there costs a month's salary. You as the player of this game, luckily got a freebie guest pass to this virtual brothels. There you meet an overly cute robot called Kasumi, and she is who you will spend your night life with. However, your guest pass can only last for ten visits... Will you be able to stay with Kasumi forever?

[edited from Anime Densetsu]