It's the night before your birthday. Or wel.. 11:59 PM.

After getting early birthday wishes by your classmates including Denki, you walk to your dorm room tiredly and open the door. Before you can turn the lights on, some led lights that weren't in your room before turned on.

You turned the lights on, to see Denki with a goofy grin. "Happy birthdaayy!! It's 12 AM!" He said cheekily, walking towards you and giving you a birthday hat. "I have another surprise too!" Denki turned the lights off and dragged you without warning.