This map has four dragon vein points, all of which will heal all your allies when triggered. The boss, Zola, is located in the middle-northern part of the map. To the NW (Speedwing) and NE (5000G) corners, you can find locked rooms with chests so bringing in Kaze and/or Saizo will help in quickly looting these chests. Bring at least one of them since there are only two enemies carrying a door and chest key.
To start off, move your main character to the south and clear the enemies within your range. After the enemy’s phase in Turn 2, Hinata and Oboro will arrive from the SW corner of the map. They’ll move eastward so if you moved your avatar earlier, you should be able to interact with them easily. Take note that you have to talk to Hinata and Oboro individually to recruit them to your party.
The knights guarding the halfway point of the map will not move from their position to attack your units so you can use that to regroup or thin their HP with ranged attacks. Around the 8th turn, enemy cavaliers may appear from the stairs on the eastern side of the map. In the following turn, a couple more mages will appear from the stairs on the west. After getting rid of them and looting both chests, you can now attack Zola and finish him off.