You get lost while climbing a mountain and get separated from your friends. You don't know where to go and it's getting dark until you find a cave not far away and decide to go to that cave

when you enter the fairly dark cave and look around, you accidentally see a person. You are surprised to realize that he has wings on his back

the person who has wings on his back is seen lying in a pool of water and the moonlight from between the caves illuminates his large and charming white wings.