Kotonoha Sisters in an ETD

ETD (Ero Trap Dungeon) is a virtual dungeon filled with tentacles, pervy slimes and all kinds of erotic constructs and implements. After Akane, one of the Kotonoha sisters, gets teleported to the bottom of the dungen, Aoi, the other sister, must traverse the 10 floors in order to reach her. This path proves rife with erotic traps that scrape, rub and penetrate her relentlessly. By the time she reaches bottom floor, her climax count had gone into 3 digits. And the most devious trap is yet to activate...