'Tis the Season for Bullets

It was the night before Christmas - wait, Gensokyo doesn't really know what that is...but at least Eirin Yagokoro has heard of it! She has gathered Reisen Udongein Inaba and more Lunarian friends to take a break from their duties and deliver gifts to everyone in Gensokyo.

The initial run for this event was from December 24th, 2021 to January 11th, 2022.
The rerun for this event went from May 26th, 2022 to June 10th, 2022.