If I owned Yu Yu Hakusho, I'd make more of it. Post anime.
----------------------------------------------------------------------------------------------------------------------------------------
Keiko snuggled to Yusuke's chest, leaning on him while they watched a movie at his mother's apartment. It had only been a few days since his return from demon world, and yet, it was though he had never been gone. Still , something was…off. She couldn't put her finger on it, but there was definitely something that wasn't quite right. It was starting to give her a headache, more so than the cheesy monster movie he had picked out. She rubbed her head against his shirt in irritation. Whatever it was, it was driving her nuts!
Finally, during the climactic scene where the atom bomb meant to kill the monster was counting down to zero it hit her. She ran from the room, quickly reappearing with a small metal object in her hand, which she summarily dumped down the front of his shirt.
"What the! Jeez that's cold!"
"Just leave it be, and scoot over, the movie's just about over"
Reluctantly, and with much grumbling and cursing, he complied, twisting at an angle to once again let her use his chest as a pillow. She leaned her head against him and sighed contently, listening to what had been missing. From the object lodged in his shirt came a steady "tick-tock" "tick-tock".
----------------------------------------------------------------------------------------------------------------------------------------
Yeah, it's a clock, guy doesn't have a heartbeat anymore. It just hit me how strange that would be, may do other REALLY short gags with it, or not.