Where's Sailing Knight Hunter? How did you ride Hunter in Gencel? Teleport to a larger place, click on the glowing cave on the left and get 1 metal dome.

There will be a simple conversation afterwards.

After the dialogue, it will be sent to Mars. Click on Cairo Dialogue.

Then there is the purchase interface of the mount, and you can get Selma's riding pet.

Then click follow, and you can sit down.