Do event ascension items such as Golden Bear Lighter get removed from your inventory like other event items do once the event ends?
Best Craft Essence: Craft Essence Tier List
FGO Reroll Tier List [5/11 updated!]
5 Star Servants Tier List: Best Servants [5/9 updated!]
Ramesses II (Ozymandias)
Gilgamesh
Berserker Piece
Hero's Proof (Proof of Hero)
Ereshkigal
Arthur Pendragon(Prototype)
Gorgon
Black Holy Grail (The Black Grail)