The sunglasses Narrator is wearing are actually polarized 3D glasses.
Mykola Yeriomin: [multilinguality] The title is in Japanese (with additional titles in Russian and English), narration is in Russian (with English subtitles), end credits are in English and two "closed" signs on the closet are in Ukrainian.
Mykola Yeriomin: [titles and credits] Main title is seen on the screen of the laptop, while end credits are written in SMS messages on the screen of Fly DS123 cellphone.
Mykola Yeriomin: [Sudden Actors] Ilya Sinelnikov (roommate arriving near the ending and taking out the garbage).
Mykola Yeriomin: [Askold Tutylopydirskiy] his name could be glimpsed on laptop display in one scene.