Talk:Tokugawa Kaiten Meikyū - Ōoku/@comment-38517568-20190405233618/@comment-27683600-20190406022830

A lot of people are stuck here cuz there is no reliable and clear info on this anywhere, guess I'll try and help make it as clear as possible. First of all, the stage itself is on the 4th floor, if you do not know this and check it, you will not even know that it has been unlocked. Specfically, it is a circular room above "Crossroad 8" on the map on this site. The map on this site does not show this room, presumably cuz it is a hidden room.

As to how to unlock it, it most likely has to do with completing the "hidden room" nodes on floors 1 and 5. You unlock these rooms by completely Act 8. Unfornately, I've forgotten where exactly these hidden rooms are but you will know when you've got them cuz they both cost 0 AP, triggers a cutscene, and both reward apples. On the bright side, you have to complete all maps if you want everything anyways. You may or may not have to fill the gauge to unlock Act 9.

Basically, do floors 1 and 5 and check floor 4 to see if it has been unlocked. Doing any other floor is a waste of time in terms of unlocking this Act, though you will have to clear all floors to unlock the challenge quest. Also, some nodes on these floors have unique or rare rewards (like 4 star stats up Fou cards) so it's up to you if you wanna do them.