Five Nights at Backrooms: Waifu Edition

Welcome to Backrooms, to a previously unknown level. The Backrooms are inhabited by special entities that look cute, but when you get close to them, they'll do anything to kill you. Their peculiarity is that they move only at night. Yes, on this level Backrooms has a day and night shift. You have found a small office with a generator and are ready to take the fight to them. From your office, you should keep a close eye on the security cameras. You have a very limited amount of electricity that you can use overnight. This means that when you run out of energy, no more security doors and cameras! As soon as one of the entity left his post, your task will be to find them and, as a last resort, close the doors.