Travelers, I've put together a collection of Seirai Stormchasers Guides for you, so that you can check for omissions and fill in the gaps. I hope it will be helpful for your trip to Teyvat!
Seirai Stormchasers: Part I
You learn from Inazuma's Katheryne that the Inazuma Adventurers' Guild has been gathering adventurers to explore Seirai Island recently... After you help a cat named "Neko" repair the shrine's "Offering Box", it reveals the method of sealing the "Warding Stones" to you. Go to investigate the "Warding Stone", search for repair materials, touch the "paper charm hangers", and seal the "Warding Stone".
Quest Reward: Adventure EXP x 300, Primogem x 40, Mora x 30,000, Hero's Wit x 4, and the achievement "I am a cat named Neko."
Seirai Stormchasers: Part II
Go to seal the second "Warding Stone", defeat all opponents, touch the "paper charm hangers", seal the "Warding Stone", and talk to Eiko to complete the quest.
Quest Reward: Adventure EXP x 250, Primogem x 30, Mora x 25,000, Hero's Wit x 3.
Seirai Stormchasers: Part III
Go to the Warding Stone's location and talk to Taisuke. Search for the path to the "Warding Stone", touch the "paper charm hangers" (on the high floating stone), and seal the "Warding Stone" (on the high floating stone).
Quest Reward: Adventure EXP x 300, Primogem x 40, Hero's Wit x 4.
Seirai Stormchasers: Part IV
Go to the Warding Stone's location, touch the "paper charm hangers", seal the "Warding Stone", and explore forward. Continue exploring after defeating the "Thunder Manifestation" to get a small item "Peculiar Pinion", and report back to Taisuke and Eiko.
Quest Reward: Adventure EXP x 350, Primogem x 40, Hero's Wit x 2, and the achievement "Seirai Stormchasers".
Summary:
The quest reward is good. You are recommended to complete this quest series before exploring Seirai Island. Upon completion, the thunderstorm weather and the Balethunder status (continuous HP loss) on Seirai Island will stop, and the challenge of the world boss "Thunder Manifestation" will be activated at the same time.
Collection Skip: "Seirai Island in Inazuma" World Quest Collection
