You go on a camping trip to your favourite nearby wildlife reserve. You have a secret spot (a cave) there and you need to go through it through a series of winding paths that only you know. It takes you almost a day to reach the cave. You unpack your belongings and go out to the nearby stream to fetch water. You reach the stream and see that the water is not enough. It has not rained that hard this year. SO you decide to go a little further up. Some time later you come across this girl.
She says she's an angel and will grant you anything you desire. In return she will ask you your most loved possession.
What do you say? What do you do?
Image from Moe.Imouto