Eureka -

Buy Kirin’s Osode (physical) or Vermilion Cloak (magical) from the Market Board or exchange items at Kugane Pier #1.

Which are you starting in? (Anemos, Pagos, Pyros, or Hydatos) Eureka

Join a party for "FATE trains" (Notorious Monsters) for fast leveling and Protean/Anemos crystals. Buy Kirin’s Osode (physical) or Vermilion Cloak (magical)

Speak to Rodney in Kugane (Pier #1) to enter Anemos. Eureka

Finish the Stormblood main scenario questline.

Complete "They Call It Eureka" from Galiena in Rhalgar's Reach (X:9.8, Y:12.5).

Complete the Weekly Eureka Challenge Log for massive XP.