"That Night" (Sn0wy Lore)

General
The "That Night" event is called so by Wallace, referring to the night he murdered a female individual that was close to him.

Hints
Over the span of Phase One, Wallace through his twitter (@wolygon) posted photos of himself in a graveyard and other cryptic messages (some being in Morse Code or in the Madeon Code)

The Reveal
In the first episode of Phase Two, Wallace (aka Evan) reveals to his therapist (Noir) that he murdered a person close to him. This event restricts him to an anti-social state due to the fact that Wallace is reminded of the event whenever he sees Ruby due to the meat cleaver on her head; signifying that Wallace might have murdered the girl using a meat cleaver to the head.

Theory

 * 1) The murder victim might be a girl named March due to previous information revealed through an encryption code from Wallace.
 * 2) The murder victim might be Ruby for the reminder (or it might just be a coincidence)