After being seperated froom their twin, the traveler stays on a beach for two months without doing anything. One day, they decided that they were going to look for their missing twin. That's when they reach their first Statue of the Seven and unlocked it. They were also granted the ability to control Anemo without having a vision. That's when Paimon and the traveler start their way to Mondstadt, The City of Freedom, ruled by Barbatos. Not before seeing a guy talk to a dragon and taking the unpure tear he left behind. They then get stopped by outrider Amber, a respectable Knight of Favonius. As soon as they got to Mondstadt, Stormterror is trying to destroy the city and the traveller drives him off. They were then granted the title of Honary Knight and helped Barbatos or Venti purify all the crystals and helped him help Dvalin. The traveler then becomes the knight that already has stories about them and was greatly talked about all over Teyvat, earning them a good reputation in Mondsadt.
After dealing with StormTerror, the traveler then makes their way to Liyue Harbor, The City of Contracts, ruled by the Geo Archon Rex Lapis or Morax. Rex Lapis died and the traveler was suspected amongst Liyue citizens. They then prove that they are not the killer and fight a Fatui Harbinger. They won the fight and he lets out an ancient god that almost drowns Liyue Harbor. The adepti, Ningguang and the Traveler then fight off the ancient God, saving the city. The traveler then earns new allies to help find their twin.
I honestly don't know much about Inazuma except that it's the City of Eternity and it's ruled by the fierce Electro Archon, Raiden Shogun or Beelzebul or Ei. I also know that Ei tends to take up every citizens vision and stores it on a statue but she did end up giving them back. Before the Archon War, Ei had a twin sister named Makoto. Nobody knew that Ei existed because her and her sister took each other's places and Makoto usually got all the credit. But they loved each other dearly. Ei fought the wars for her sister while Makoto ruled the nation. Ei had many friends that she loved dearly and couldn't live without. The Cataclysm took all of that away from her and she became a fierce leader, but she wasn't too unfair or anything. Ei's sister and her friends were all killed in the Cataclysm, causing Ei to take her sister's place, but not her sister's name.
A long time before the seperation of Lumine and Aether, there was a war amongst Gods. It was a long and fierce war and the only two original Archons were Zhongli and Venti. The new Seven replaced all the other archons except Zhongli and Venti. Raiden Shogun or Baal was a God that replaced one of the original Seven. So far we only have three nations unlocked that granted the traveler the abilitys to control the Anemo, Geo, and Electro elements.