Another day another diaper. Undyne had been on post for the past several hours and had soaked her diaper heavily. Throughout her shift she had wet at least 4 separate times and her diaper was now sagging a fair distance down her thighs. The extra weight between her legs brushed her thighs with every step. Undyne enjoyed the warmth around her waist as it was comforting in the cold weather. The comfort was counteracted though as having her padding at capacity meant the diaper would droop down lower onto her hips as she walked causing Undyne to have to re-adjust her soaked diaper every few meters. Like clockwork she would pull up on the soggy padding squishing it into her crotch, the wet spongy texture caressing her body causing the over saturated padding to momentarily release some of her urine only to re absorb it when the pressure was released. By the time she reached her house Undyne was clutching the diaper with one hand and pulling up on it constantly while walking to prevent it from slipping down at all.

As she reached her door she felt a slight tinge as the need to pee arose again. "Ugh, I'm already drenched and the bathroom is almost here. I'm NOT going to use this diaper again." Undyne muttered to herself. Although she intended to reach her bathroom, Undyne couldn't help but wonder why it mattered, she had already wet herself several times today, and once more before getting home wouldn't matter. Although Undyne reminded herself that she started wearing under the condition to only use her padding while on shift, electing that she didn't need them at home And felt that at this point since her shift was over she just couldn't justify relying on her diaper again

Undyne fumbled with her keys in the cold. "Come on! I'm not in the mood for this you shit!" She felt her desire to go in her diaper rising as she grew more desperate. "I JUST WANT TO GO INSIDE!" The issue on whether if she should use her diaper and be lazy became if she needed it to absorb an accident.

Right as she managed to open her door Undyne froze. "*GASP* oh no oh no, its not supposed to go like this." Undyne stood in the doorway, legs spread slightly as she began to wet herself. A faint hissing could be heard as Undyne relieved herself involuntarily, re warming the padding. "Really glad i was wearing YOU" Undyne sighed in relief. She found herself happy that she was using her diaper one last time, she slid a hand down to the front of her padding to enjoy the feeling of new warmth. However the already drenched padding gave Undyne a false sense of security as it initially contained her accident. Undyne's eyes grew wide as she felt her urine pooling at the bottom of her diaper and her hand getting damp. Soon small streams were leaking out of the guards and into Undyne's pants. "Shit i gotta get to the bathroom! This is terrible!" Undyne quickly waddled to her restroom, causing the overflow to spill faster as the soaked padding refused to absorb any more. the diaper was completely saturated and Undyne had been wetting through the padding. Her diaper leaked leaving a trail of piddle the short distance Undyne had to travel, swaying heavily between her thighs with every step. She stood in front of her toilet and left her pants in a pile struggling with her tapes trying to salvage her dignity and relieve herself at least partially in the toilet. Still wetting herself Undyne managed to undo one side of her diaper, causing more of her urine to leak down her thigh. Shortly after Undyne removed all the tapes, her diaper falling to the ground with a loud slap. Despite trying to stop peeing she couldn't, and continued to wet as her "protection" was dropped

"Come on please almost there!" Undyne pleaded with herself wanting to at least use the toilet a little at this point in an attempt to restore some pride. Undyne peed directly on her diaper on the floor, urine spilling off the diaper onto the tile. As she sat back on the toilet she wet directly on the floor and on the front of the toilet seat.
By the time Undyne had sat down her bladder at released all but a few drops, as the sound of her stream hitting the water lasted less than a second.
Undyne let her head fall into her hands in shame. "This is humiliating." she muttered. She stood up and grabbed the dripping padding off the ground not bothering to fold it up and threw it over to a bin filled with wet diapers. The diaper missed and landed on the ground with a few other diapers. One like this one was still open, while others where folded. The one thing they all shared were they were thoroughly soaked.
Undyne returned to her living room and sat down, the crinkle of dry padding accompanying the afternoon sounds and the mew mew kissy cutie theme song.