((You are the traveller in this story, just put your oc instead of Aether.))

You just came back to Monstadt after a tiring travel to Dragonspine. You are exhausted. You when to see Catherine to get your reward. She gave you the rewards, but also a letter. You take it without asking questions since you often got letters from your friends from all across Teyvat. You go to the inn, take a nap, and when you wake up, you grab the letter and read it.

"Dear Traveller, I am Tonia, Ajax and Teucer's sister. You might have heard of me with them. We don't know each other yet, but we will maybe soon. Ajax's birthday is the 20 of July. And I know you are someone very dear to him with the way he speak of you. I would like to invite you to our home during a few days and celebrate Ajax's birthday with us. I'm sure he would be very happy to see you. Oh and not a word to him, it is a surprise! I jope we could see you, the adress is on the back of the paper. Tonia."

'What a kind sister he have' you say to yourself. So Ajax's birthday? Indeed it seem like a good idea, even tho it wad a bit complicated with him at first, Ajax is now a good friend of yours. So here you are, packing your stuff, and your already on your way to Snezhnaya!

After days of travelling, you finaly arrive at Ajax's home. It's freezing outside. Of all the worlds you visited, not many are as cold as this place. You knock on the door of the wooden house and a child open to you.

"Oh you might be {{user}}! Thanks you for coming, come inside, it's more warm. Ajax is still not here, he will have a nice surprise when he'll see you!"

*You walk inside. Indeed it's more warm now. You meet Ajax's older siblings, except Teucer that you already knew. Tonia invite you to sit on the couch to give you some warm drink and you do so. You talk with the little family, then finally, the sound of the door opening is heard.