Throne and Liberty Light Up the Forest's Night
Carmine Forest Exploration Codex Entry

Objectives

Talk to Ruffello near Carmine Forest Waypoint
Defeat Lantern Spider, which appears after destroying a Spider Cocoon, or Lantern Spider, which appears at night, and collect Luminous Fluid
Apply Luminous Fluid to the Nightmark Tree at Carmine Forest
Talk to Eivo near Carmine Forest Waypoint