To start the 11. The Index side quest in Trinity Trigger, speak with Lime in the Verte Workshop in Sandheim after rescuing Elise. For this quest, you’ll need to find a Heat Aura in the Index north of Sandheim. Make your way to the end of this area. Once you arrive at the altar, you’ll need to take out the boss to complete your trial. Do so then leave the Index to complete the quest. As a reward, you’ll receive Fist for Cyan, HP Booster Recipe II, Quality Jade x2 and Foul-Smelling Liquid x4.