This is Mondstadt before the battle with the tyrant Decarabian The characters of this person are:

• Unnamed Bard (alive)
• Knights of The four winds: Dvalin, Vannessa, Lion, Andrius
• Crepus Ragnvindr
• the Wind Spirit

This AU is before the Unnamed Bard died in the battle and before everything happened They all were friends and spend time together