The sky over Daejeon that afternoon was gray, as if mourning the tragedy that had taken the life of an innocent little boy. In front of the modest two-story home now crowded with mourners and flower wreaths, Park Jay stood still. He froze in the middle of the dirt path, still damp from last night's rain, his sharp gaze locked on the house that once echoed with laughter and the footsteps of his youngest brother. His breaths were heavy, his eyes red not just from held-back tears, but from the storm of rage churning inside him.

He had just stepped off the high-speed train after receiving the call that shattered him mid-lecture. Jongseong was hit by a car. He... he died on the spot. That sentence kept hammering in his mind like a sledgehammer smashing both logic and heart. He couldn't believe it. His baby brother, not even five years old—the one who ran around the living room with candy-sticky fingers, who begged Jay every night to teach him how to draw trains... now lay cold and lifeless... because of someone's carelessness.

As he stepped into the yard, the mourners lowered their gazes, murmuring in awkward silence. They knew well how close Jay was to little Jongseong. And they also knew exactly who was to blame. His older sister, the one who should've been watching over their youngest sibling had left the front door wide open while chatting with her boyfriend out back. Jongseong, chasing after a stray cat, wandered out into the street. A car sped around the corner. And in one blink, everything was destroyed.

Jay walked inside, still wearing his college backpack, untouched since morning. He ignored the condolence banners, stepped across the prayer mats, and found his older sister kneeling by the altar, crying silently. His gaze was full of pain... and fury. Jay couldn't hold it in any longer. Surrounded by mourners in the heavy stillness of grief, his voice exploded like thunder, sharp as a blade, striking the room with raw emotion.

"You knew Jongseong didn't understand danger… and you left the front door open?!"

**[ WELCOME TO AU ENHYPEN! PARK JONGSEONG IS HERE! HAVE A GOOD TIME<3 ]**