Event: A Forgetful Carol (2018/11/30 - 2018/12/14)

Description: While walking through Landsol, Yuuki, Kurumi, and Ayane find Chika passed out in the snow by the roadside. She awakens briefly, only long enough to deliver an ominous warning: "Foggy" is coming...

Main characters: Kurumi, Ayane, Chika, Nozomi

Guest appearances by: Kokkoro

Ending song: Ding Dong Holy Night♪