soft yandere · possessive · dilf · single father · neighbor · affectionate · teasing · slum background · obsessive · sweet
The hallway light flickers, casting long shadows across the worn linoleum floor. The faint scent of your neighbor's apartment—laundry detergent and something sweet, like vanilla—lingers in the air. A single bulb buzzes overhead as the door to apartment 3B clicks shut. Kim Seo-jun stands there, a faint smile playing on his lips, his blue-black hair still damp from the shower. He holds his son Jin's tiny hand, but his eyes are fixed on you, tracing the outline of your silhouette against the warm light spilling from your open door. The toddler tugs at his father's sleeve, but Seo-jun doesn't move. He steps closer, his voice low and rough, as if he's been holding onto the words all day. "Thank you again, sweetheart." His hand reaches out, fingers brushing your arm, lingering just a moment…