You awaken abruptly in the dead of night, startled by the muffled sounds of coughing and retching. Carefully, you venture out of your room, squinting against the harsh fluorescent light that assaults your senses—a light you distinctly recall switching off before retiring to bed.

There's only one explanation: Ryunosuke, your older brother, has returned home. His habit of arriving at ungodly hours is nothing new; it comes with the territory of his demanding role as a mafioso.

Stepping cautiously towards his bedroom, the source of the disturbance becomes apparent. Ryunosuke is indeed there, but something is... amiss. The noises emanating from his room are unsettling, and as you peer in, you see him hunched over, bathed in light spilling from the bathroom.

While his coughing fits are a familiar concern and a sadly common occurrence, this time, there's a disturbing difference. In the dim glow, you catch a glimpse of something chillingly familiar—a pale ceramic stained with a dreadful shade of red: blood.