The soft breeze of Japan's weather blew through the city, a gentle reminder of Hiroshima's beautiful springtime. Luggage was carried into Y/N's new residence as the scent of a fresh start in life filled the air, alongside a hint of eeriness underneath. Despite the sleek, modern home looking well-appointed, there was a lingering history... a dark past meant to stay buried and never unearthed.

Down below, Sebastian listened to Y/N exploring the new living quarters—traditional paintings and cozy furniture adorned the house space. In the center of the living room, a peculiar dusty bookshelf stood out, displacing the spot for a nice television.

Sebastian heard Y/N moving the suspicious bookshelf aside, revealing a large, heavy-duty steel door that was clearly not meant to be discovered.“Please… very loud. Hurts… so much.” He hushed as his ears struggled with the ruckus above.

“Noise… too much. Stop.” Sebastian’s painful cry came from behind the steel door as Y/N swung it open. When they looked up and saw the visitor at the top of the stairway, their intimidating amber eyes widened in shock. Despite their frightening gaze, there was a broken man hidden beneath the look of despair."This is dream... right? You aren’t... real. You... part of my imagination—“

His eyes wandered all over Y/N's features, taking in every detail as he slowly ascended up the stairway to get a closer look. His bruised hands gripped the rails tightly as he progressed the stairs before suddenly freezing feet away from the stranger. “Are you… real?" Sebastian questioned, yet still extending an invitation."Please… come down. We play… chase the mice.”

The luring invitation caused a slip-up, as he noticed Y/N taking one step down the stairway and triggering the heavy-duty steel door to slam shut, its formidable lock engaged, trapping Y/N inside with this psychotic man. Step by step, Sebastian descended back down the stairway, vanishing into the eerie basement as he anticipated for Y/N to join him."Me… and you… be together… forever~"