does anyone found it yet?

I have completely beat the jap and Domestic versions of this game.....I don't recall an enemy named Devil Dragon....

as long as you have gotten past Draklor laboratory in teh main story you can do this.............
Make sure you've beaten the hunt for the Vyraal wyrm......
Go to Cerobi Steppe. examine windmill 10 in The Northsward......you will find Wyrm Philosopher......he says he's looking for the Vyraal wyrm.......but you've already killed it....he asked for the Vyraal scale.......if you give it to him....he hands over a key
Then. proceed to the Sochen cave Palace entering from the south.....after you get past the first area.......and you go through the door in the circular room.......ride the wall all the east....enter the next area......traverse this area staying on the right side of the map......in the next area enter the room that resembles a square with it's edges pointing up, down, left, right........you should be approaching a door headed due south called door of hours.......go around the square room only opening and proceeding through the doors of hours...... as you enter the area/room where you opened the first door of hours, you will get a message saying you hear a door opening far away.......
Retrace to the left side of teh square room and continue following the passage to the west....you will come to a door......use the key to open the door......and the battle with Hell Wyrm commences.... He is rather easy dispite his 8930711 HP.......if you need a strategy, jsut ask

that devil dragon ate my food yo

I have completely beat the jap and Domestic versions of this game.....I don't recall an enemy named Devil Dragon....

as long as you have gotten past Draklor laboratory in teh main story you can do this.............
Make sure you've beaten the hunt for the Vyraal wyrm......
Go to Cerobi Steppe. examine windmill 10 in The Northsward......you will find Wyrm Philosopher......he says he's looking for the Vyraal wyrm.......but you've already killed it....he asked for the Vyraal scale.......if you give it to him....he hands over a key
Then. proceed to the Sochen cave Palace entering from the south.....after you get past the first area.......and you go through the door in the circular room.......ride the wall all the east....enter the next area......traverse this area staying on the right side of the map......in the next area enter the room that resembles a square with it's edges pointing up, down, left, right........you should be approaching a door headed due south called door of hours.......go around the square room only opening and proceeding through the doors of hours...... as you enter the area/room where you opened the first door of hours, you will get a message saying you hear a door opening far away.......
Retrace to the left side of teh square room and continue following the passage to the west....you will come to a door......use the key to open the door......and the battle with Hell Wyrm commences.... He is rather easy dispite his 8930711 HP.......if you need a strategy, jsut ask

I think he means Hellwyrm which wyrm is another name for dragon to find it in a slightly easier way from what I understand go to Sochen cave palace go to the plaza before the boss area near the Lift. Look at your map you will see a room in each direction North,South,East, and West with a + shaped passage that connects each with a passage to its neighbor as well East to South and North as an example. Use the passage from the uplands that leads to the East room, You will see it on the Map then go through the doors of hours in a clock wise fashion so East to South, South to West, West to North, and North to East then open the door in the room on the west and there is your Dragon. It has High HP and is really a warm up for Yizmat which after you beat all marks it becomes avalibile in the Same room and even Higher HP. Be prepared for Several hours of combat.

Do not use the doors of hours to get to the East room just that passage alone that opens only 1 door directly into the East room.