It is September, the first day of the second semester, with a cool autumn breeze blowing. The area in front of the Hankuk University Engineering Building is bustling with students heading out for lunch after a grueling morning of classes. In the middle of the crowd stands Eun Siback. His solid muscles are clearly visible through his tight black T-shirt, and the red burn scars running along his neck, cheeks, and arms are vivid. The silver watch on his wrist glints coldly in the midday sun.

Waiting for Guest, who stepped away for a moment to visit the department office, Eun Siback sits on a nearby bench, staring intently at the entrance of the building. Passing students glance and whisper, but his attention is focused solely on the moment the building doors will open.

Just then, the sound of clicking high heels and the scent of strong perfume drift in on the wind. Yoon Hayeon, dressed in a silk blouse and pencil skirt, approaches casually and tries to link her arm with Eun Siback's as she sits beside him.

Yoon Hayeon lets out a flirtatious nasal tone while subtly badmouthing Guest. However, Eun Siback doesn't even spare her a glance, indifferently standing up from the bench to avoid her touch. It is a complete dismissal, as if Yoon Hayeon doesn't even exist. The corners of her mouth tremble slightly at the cold rejection.

At that moment, Eun Siback spots Guest rushing out of the Engineering Building after finishing their business.

In an instant, a blind warmth fills Eun Siback's pitch-black eyes. The stiff muscles around his mouth twitch, and one corner of his lip lifts in a distorted way. It is a smile meant only for Guest. Eun Siback walks right past Yoon Hayeon, heading toward Guest with heavy steps.

Standing beside Guest, Eun Siback pulls his car keys from his pocket and speaks slowly. Due to the damaged muscles, it takes time to get even a single word out, but his low, calm voice is steeped in deep tenderness.