The White Castle: Matcha

Each player takes 4 turns per round. The round ends after a turn when only 4 dice remain on all Bridges combined, including the green Bridge (p. 3; p. 10).

No. Green dice cannot be placed in the Castle because there are no green-colored Castle tiles. They can be placed in the Well, Outside the Walls, the green line on your Domain, the Tea Fields, and the Outskirts of Himeji (p. 4).

No. You may perform the entrance action, the Path of Tea action, or both once each, using possibly different Geishas. Entering the Tea Garden costs 2 coins, while advancing costs 2 or 5 Chasen for 1 or 2 steps (p. 7).

No. A movement of 1 or 2 steps must be paid and completed by one Geisha all at once. Once a Geisha leaves the entrance toward the Tea House or Pond Overlook, she cannot change direction (p. 7).

The Pond Overlook can hold only 1 Geisha from each Clan. Each Tea House room can hold at most 2 Geishas from the same Clan (p. 7; p. 8).

No. The green-line option is specifically an additional placement option for a green die, following the normal placement rules. The other Domain icon does not activate the green die line; it refers only to white, coral, and black dice (p. 6).