Ki and Gil will enter this room through the first door at the top-left of it. It contains eight Orange Snakes (which take seventy-two hits to kill), one Dark Yellow Slime (which takes 168 hits to kill) and two Black Oozes (which take ninety-six hits to kill). The two Black Oozes will be guarding the two keys.
The key at the top-right of the room opens that aforementioned first door at the top-left of the room - and the key at the bottom-left of the room opens the second door at the top-right of the room. There are no keys for the second door up at the top-left of the room, the door at the top of the room, the door at the bottom of the room, or the first door at the top-right of the room - so there is no way of knowing where they go until you are led back here.
The aforementioned first door at the top-left of the room leads back to Cave of Gramarye (Room Pass: YVY), and the second door at the top-right of the room leads to Cross Point (Room Pass: SC7). You should remember the second of the Room Passes, as that first one is of little use to you now.
