Forgot password
Enter the email address you used when you joined and we'll send you instructions to reset your password.
If you used Apple or Google to create your account, this process will create a password for your existing account.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Reset password instructions sent. If you have an account with us, you will receive an email within a few minutes.
Something went wrong. Try again or contact support if the problem persists.

Treatment on the Island Genshin Impact Quest Guide

Better get to farming Naku Weed!

Begin the Genshin Impact world quest Treatment on the Island by speaking with Yasumoto at the location marked below, on Yashiori Island.

Recommended Videos

Related: Genshin Impact Orobashi's Legacy: Part I Quest Guide

You'll need to gather 12 Naku Weeds to fulfill Yasumoto's request—don't forget that you can buy five Naku Weeds per visit from Aoi in Inazuma City.

Once you have 12 Naku Weeds, talk to Yasumoto and then turn your clock to 18:00-21:00 the following day before speaking with him again.

Talking to Yasumoto now will trigger a quick fight. Take down the enemies that appear, and then speak with Yasumoto once more to complete Treatment on the Island and earn:

  • Adventure EXP (250)
  • Mora (30,000)
  • Primogems (30)
  • Hero's Wit Books (3)

After quest completion, you can continue to leave 12 Naku Weeds in the bamboo basket outside of Yasumoto's house. On the first and second day of doing so, the Naku Weeds will be replaced by an Exquisite Chest. Note that you cannot turn the game clock to speed up this process; you'll need to wait an entire day each time you leave the Naku Weeds.

After leaving another 12 Naku Weeds on the third day, you'll be prompted to look for Yasumoto using your Elemental Sight. This part of the quest is glitchy and will lead you nowhere, so move straight to collecting the three Pharmacist's Notebooks that are scattered around Fort Fujitou.

The exact locations of these Notebooks can be seen below (make sure to note the mini-map location as well). Collecting these will reward you with the "A Doctor's Odyssey" achievement (five primogems).

Pharmacist's Notebook I
Pharmacist's Notebook II
Pharmacist's Notebook III

After collecting all three Notebooks, teleport to the waypoint south of Jakotsu Mine and turn around to find a Luxurious Chest and a basket of Naku Weeds.

Complete the Genshin Impact Sakura Aborism quest by finding all of the Sakura trees, or read about the next upcoming Wish banner.


Pro Game Guides is supported by our audience. When you purchase through links on our site, we may earn a small affiliate commission. Learn more about our Affiliate Policy
We have upgraded our commenting platform! Existing comments will be imported over the next few weeks.
Author
Image of Sierra Windham
Sierra Windham
Hey there! I'm Sierra, and I'm probably crying over a fictional character while you're reading this. JRPGs and farming simulators like Rune Factory are my weaknesses. Tweet me at @windhamwriting with your favorite Persona game!