A/N Sorry for the late upload. Enjoy the chapter!

Chapter 18: The pale underbelly

They could not tell if the distant growls were from the rushing water... or something else... Regardless, they were safe from the viewers above and they had no other way to go but forward, so forward they went. They did not enjoy this, however, it was a sewer after all.

"This is absolutely disgusting..." Frisk mumbled as she hiked up her pants legs to keep them from getting wet.

"I'm glad the smell is long gone... but..." Mono shivered and tried not to think about that.

"Where do we even go?" Six asked.

"Well..." Mono replied. "The tower was in that direction..." He pointed towards a dark tunnel. "So I guess that's where we go... hey, does anyone still have that flashlight?" Chara nodded.

"Yea, but I think it got a bit wet... let's hope it's waterproof." She pulled out the flashlight and clicked the button to turn it on but... nothing happened. "Damn... don't do this now..." She smacked it against her palm a few times and eventually, the tool came to life and cast rays of light on the dark corridors. "Thank goodness... Let's hurry before it dies on us. I wouldn't want to be caught in the dark in there..." The others nodded and followed close behind her, each one clinging tightly onto the clothes of the person in front of them, effectively making them a small caravan. This was a great idea because the rushing water was strong and swift and made it easy to slip, fall, and potentially get carried away. However, their impromptu train kept them close together and safe. They were fortunate in that their journey was a straight stretch to where they needed to go, with only a few forks in the road here and there that they quickly figured out. However, there was always a looming sense of dread in the air. Every now and then, they'd hear a sound that was far too... organic to be the rushing of water and creaking of pipes. "I don't like it here... when can we head back up?" Chara asked.

"Hopefully soon. Maybe in a few hundred more meters?" Mike replied.

"Meters?! Jeeze!" She replied.

"You want to get chased by those things again?"

"No, but I also don't want to be down here any longer!"

"Maybe if you kept walking and stopped complaining we'd be done sooner!"

"Shut your mouth!"

"Make me!"

"Oh, I will wise guy! Come here!" Chara charged at Mike and tried to beat him with the flashlight, but Mike grabbed her wrist and wrestled her with it. They fought for a bit as the others tried to break the stressed siblings apart.

"Guys! Calm down! We gain nothing from being at each other's throats!" Mono exclaimed.

"I want to tear his out!"

"You don't mean that!" Frisk tried to say.

"But I do!" Mike retorted. They kept this up for a few moments more before Six got annoyed and went up to them and bonked their heads together. This caused them to fall back and hold their heads in pain.

"Get a grip! Both of you!" She said with a sneer. Her outburst shut them up fairly quickly and rubbed their necks awkwardly. Six sighed and rubbed her temples. "Much better..." Mono walked a few feet past them and picked the flashlight out of the water.

"It's getting dimmer... we need to hurry up." Mono turned to the others, only to see looks of abject horror on their faces. "What? What's wrong? Something on my bag?" He asked as he touched it. The others shook their head and shakily pointed to something behind Mono. Mono stiffened as the hair on the back of his neck raised. He felt something warm and damp hit his neck, like someone breathing down his back. He slowly turned and shined his light only to be met with a wall of scaly flesh. "Oh no..." He slowly raised the light up farther, this time, he was met by a wall of teeth, which opened up and let out a demonically loud roar that shook the very foundations of the sewer they were in. The kids screamed and quickly turned tail to run away, but the water slowed them down significantly, but the monsters massive girth slowed it down just as much. So long as they didn't fall or get swept away... they should be fine. They did have a huge problem though: they had nowhere to go. No where to hide. And no other options bit to run. As the others ran in fear and panic, Mike and Six ran with rising anger. All the running... all the hiding... being so helpless all the time... it was really starting to piss them off.

"Damn you, foul beast!" Mike exclaimed as he grabbed the flashlight out of Chara's hand and threw it at the beast. The metal rod struck the alligator-esque creature on one of its many sharp teeth and broke it right off. This caused great pain to the beast, but it did not stop it. However, they were not done yet. Six used Mike as a platform to jump high into the air and meet with the loose bit of tooth. She gave it a sharp kick, making sure not to hit the sharp edges, and drive it down the beasts throat. The jagged fractured tooth got lodged deep inside its gullet, which caused it to lurch upward in shock and agony. However, its size caused it to smash right into the roof of the sewer and cause many cracks to form. It continued to thrash about as it tried to dislodge the tooth that caused it such pain, all the while causing even more damage to the structures around it. Once it finally hacked up the cursed shard, it bared its teeth angrily at the kids, but not for very long, for its angry thrashing had damaged the serwer so much that it caused several tons of concrete, steel, and anything else that was once safely above it to now crash down directly on it, smooshing it like a pancake. The sickening crunching and squealching of bone and tissue and who knows what else nearly made them throw up, but they kept their posture as the beast gave a few final twitches before finally succumbing to the eternal sleep. Everyone glanced at Six and Mike in shock, who were breathing heavily after such a traumatic event. They glanced upward and noticed that they could see the sky.

"Well... There's our way out..." Six mumbled weakly before she and Mike collapsed, the adrenaline and stress finally getting to them and forcing their bodies to shut down and fade into unconsciousness