Cotton, Teleport Stone Quest

Cotton - You get it randomly when you install the statue of the goddess. I managed to get Cotton on my 6th try by watching an ad. 😄 Teleport Stone - At first, I thought I had to craft it like a diving suit and wasted time in the mine!! Turns out, they sell it at the shop 😅 After buying it from the shop and installing it, the quest was completed. lol