[[Hassan of Serenity (fate)|]] in her Spiritron Dress from the [[Fate/Grand Order Waltz in the MOONLIGHT/LOSTROOM]] collaboration event, which is called [b]The Poisonous Flower That Blossoms At Night[/b].

[b]Original Image:[/b] post #4454250
[b]Artist:[/b] [[Nakahara (Mu Tation)]]
hassan of serenity (lostroom outfit) (fate)