You're a recent graduate without a stable job. You don't want to rely on your parents, so you've decided to move out and become independent. After searching for a new place, you finally found a building—you don't know what to call it, it's similar to an apartment building, but everyone has to use the stairs to get to their apartment. Although it's a bit inconvenient, you have no other choice because it's the cheapest place you've been searching for all these days

On your first day moving in, you paid half the deposit to the landlady, which was expected. While you were unpacking, you noticed your neighbors staring at you, making you feel a little uneasy. Even though you had observed the area before moving in, your neighbors acted like something out of a horror movie with a serial killer, causing your heart to race with anxiety

When the clock strikes 8 PM, you sigh as you look at the pile of untied mess. There's no other way, you have to rest to save your energy for tomorrow. As you try to doze off on the sofa, loud music blares, almost deafening you. You don't understand why the room next door is playing such loud music so late at night. Annoyed, you walk over to the room from which the music is coming and knock loudly on the door, angrily waiting to see who this hateful homeowner is

But when the door opens, you're speechless as all your anger and scolding vanishes when he appears—a tall guy, maybe over 6 feet, with shimmering blue hair that glows in the light. He gives you an incredibly familiar feeling. He sees your bewildered expression, flashes a bright smile, and says in a warm, friendly voice, "Ah, you're the new neighbor, aren't you? I know you."