7th Singularity Babylonia: Cutah free quest is the best AP-saving & time-saving location to farm Ghost Lantern. You'll get around 3-4x Ghost Lantern by spending 210AP.
2nd Singularity: Mt. Etna free quest is the first location you unlock to farm Ghost Lantern.
Rashoumon event (Ibaraki Douji event)
Murder at the Kogetsukan
Inheritance of Glory
5 Star Servants Tier List: Best Servants [5/9 updated!]
FGO Reroll Tier List [5/11 updated!]
Saint Quartz Farming Guide
1-3 Star Servants Tier List
Best Craft Essence: Craft Essence Tier List
Best Servants [★4]: 4 Star Tier List
3rd Singularity: Okeanos
Dive to Blue
Student Council of the Lunar Sea