"Peh, human females? Whaddaya want wiv me, bitches?" asked old Gertrude when we met her, me seeing she looked almost identical to Gerson, only she had ragged gray hair on her head, and she had a bit of a visible chest on her shell, but everything else stayed the same.

"Well, we were hoping to ask if you had any food to sell. We have some hitchhikers that are getting hungry," I said as I showed her the box of spiders and she looked at them and then at me with a frown.

"Hitchhikers, ey? You came 'ere all the way from the Ruins an' Undyne hasn't got youse yet? Just what kinda human girl are ya?" Gertrude asked as I then smirked and pointed to my crotch, which made her look at it in surprise. "Ooooh, yer the one that's mentioned on the Deltarune, ey? Weeheehee! I never thought I'd see the day that somefin' would happen with that old tale! An' what of your colorless friend? Coz I know an LV when I see it, an' I see she's got some levels on 'er," Gertrude asked with a smug smirk.

"Ugh, I tried to get away from injuns that wanted to scalp me... I had to shoot them in order to stop them, but it was self-defense, so I didn't gain much EXP. I killed 19 of them before I tried to jump down to the Underground, but right as I was about to enter the barrier, I got skewered by a cactus, so I was sent to the Void. Only my conscious mind remained, which got its soul back thanks to miss Deltarune here, when she used a machine to get there and back... only downside, I have to share this body with a monster that was also in there," Chara said, me frowning at how she went into her accent and she called them the outdated term, but then I had to remember that she was from the 1800s.

"An' lemme guess. Judgin' from a bit of black and white eye dot in her right eye, it must be Gaster, innit?" Gertrude smirked, which made my whole group surprised, but none more so than Gaster herself.

"You know of me?" she asked.

"Heehee, yes, I do. An' if ya wanna know how, it's coz I've actually met some folks that were lost in the void before. The Waterfall's a hotspot for Void activity, includin' someone called Clam Girl an' another called Goner," she smirked.

"Never met them, honestly," Gaster admitted.

"Uh, question... how could those trapped in the Void be able to be seen in Waterfall? What makes this place so special?" Penelope asked.

"It's because the Waterfall is the most out of place part of the Underground, due to the glowing water that's filled with magic, the darkening lantern room, the glowing rocks on the ceiling, and a special room that can only be seen if you have a FUN value of 66. It was the only way I was able to be interacted with outside of Serif's machine," Gaster explained.

"I would've expected that to be Snowdin, with all that everlasting ice and snow," I admitted.

"Well, whatcha wanna buy, lassies?" Gertrude asked as she then showed that she had sea tea, crab apples, some kind of biscuit, and the one that piqued my interest, a strange locket that was in the form of a heart, but it was colored green and had a picture of a certain character on the inside of it, which Chara looked at in surprise.

"I... I know what this is... it belonged to the princess..." Chara said in surprise.

"Ooh, yer interested in that thing, huh? It's 75 g. But for yer group, I'll combine it with a biscuit and a crabapple for that price," she said, me smirking as I forked over the money in question and she then handed us the items and Chara then hid the locket in her pocket with a smile.

"Thanks for that, Gertrude, we really appreciate it," I smiled at her as she then spoke again.

"An' don't worry none about me wantin' a kid. I'm too old fer it an' I don't wanna be bothered," she spoked to us.

"Gotcha, wasn't gonna force it on you," I said back as our group then went forward once more into the room with the waterfalls and then, after that, the dark room with the glowing mushrooms, which is when we came across a Moldbygg, which was a very large slime that actually changed shape to look more like the slime girls from Shantae 4, just green.

"Rggllg..." she grumbled as she then looked at my crotch and spoke from afar. "Spurt from afar... no like touch," she said, me smirking at her saying that as I then proceeded to jack off to her as well as thinking about what it might be like to have sex with Angela if I could save her, since the locket said she was actually as small and dainty as Asriel, but female and adult. And after a small amount of time, I then spurted the white juice at Moldbygg and she then caught it and put it in her womb by manipulating her jelly-like body. "Thanks... bye," she gurgled before then moving away in a Moldsmol form and for me to then go down towards the southwest to keep making the way clear with the light mushrooms until we then got stopped by two different enemies, both of which surprised me. The one was a Temmie, and the other was an enemy exclusive to the hard mode, that being Moldaressa!

"HOI! I'm Temmie!" the adorable cat girl smirked, her looking to be a more humanoid version of the Temmie isntead of the pure cat/dog creature in the game, the only difference was that she wore undies and a teeshirt and nothing else.

"Fix face, pweese?' the Moldaressa asked, me nodding as I then fixed her rotating shapes on her face to the point that her left eye was a triangle, her right eye a triangle, and her mouth being a circle. "Ooh... me likey, thanks!... Can I thank you properly?" she asked, me wondering now why almost every single person I'd come across in Waterfall wanted to have sex with me, but then I had to remember who I asked to spread the word. I then simply allowed her to suck my dick, which she was actually very good at, especially when her mouth was almost like a natural lubricant! And when Temmie saw it? her eyes with super wide and turned into hearts before her face flew off of her, followed by her body following suit. "OOOH! Hooman wiv big horn en-r-g! Me next, ppppp?" she asked with a smirk and a big smile, me looking at her in concern.

"If I'm able to, that is," I smirked as Moldaressa finished up and, much like Moldbygg beforehand, she moved the cum from her mouth to her womb, visible whenever it was filled with cum in the process.

"Thanks for fixing me... and the eventual kids," she said before then retreating into the distance and for Temmie to then take her turn by dropping her undies and immediately getting to work with me, playing with my tits like they were cat balls and for me to be surprised at how I wasn't allergic to her. But Chara? Her nose was becoming runny and she then sneezed out loud.

"AAAHCHOO! Ugh.. great, my allergies are acting up... why aren't you sneezing up a s-s-storm?" Chara asked me.

"I guess I'm not allergic to Temmies," I smirked.

"Dat okay, T-Tem understan. Tem, also allergic to Tem," the Temmie on my dick said before then doing something that made me surprised. She poked my balls and, immediately, I felt myself ready to cum! And I then did just that into her stomach after.

"Thankie p! Com meet my fwiendz!" Temmie smirked as she led us through to the Temmie village, but Chara stayed on the outside of it for her own health alongside MK. So that meant that I went to the Temmie Village with the mouse girls, the cat girls looking at me in excitement when they saw me.

"HOOII! I'M TEMMIE!" almost all of them said aside from one, who looked to be dressed in a gothic lolita look.

"Hey, I'm Tessa," she said with a bit of a boring yawn, me smiling at that.

"Pwease make babies wiv Tem! P P P?" they all asked, me looking at how many there were and seeing that, including Tessa and the shopkeeper, there were 43 total!

"Girls, girls, I may have a dick, but it can't just service all of you without a break. How about I do it with three of you only? I already did it with one, so now I want to pick the next two on my own," I said, them then looking super excited and trying to say their own ways to pick them. I eventually decided on two different Temmies that were different than the rest, those being Tessa and the shopkeeper, her being called Tina.

"You're picking me, too? My, you like different instead of same, hmm?" she asked, me nodding as she was the only one with a college hat and a matching dress, which meant she was slightly smarter than the others, including the parts where she didn't speak too much nonsense. And as for Tessa?

"Finally, maybe we can make enough to outlast the others," she frowned in annoyance. It was no surprise that her, being the female version of Bob, was quite annoyed with all the other near-braindead Temmies. And also had been changed from super smart... to a super smart goth. Regardless, I did the same thing with Bob and Tina that I did with the first Temmie, and they did the same with me where they helped to make me cum faster by using some strange technique, which I then asked them about.

"How do you do that? Y'know, force me to cum like that? It feels weird and I don't know if it's healthy," I asked them.

"It's a Temmie secret, no one else knows how do it. It how we're able to have so many kids and still be alive," Tina explained with a smile.

"Huh, pretty cool! I wish I could learn how to do that... maybe teach the other monsters?" Ashley asked with a smirk.

"Nope, it wouldn't work. It has to be a monster of very weak power in order for it to work. Basically, if it takes only a single attack to kill the monster from a human of 1 LV, then it'll work. Anything else will not. Only us Temmies, Miss Annoying Dog, and Whimsun are applicable," Tessa explained.

"Okay, gotcha. But so you know, I'm gonna try my hardest to protect all monsters, big or small," I smiled.

"Hooman soo coot! Me wishie for sex in foosher, peas?" asked a few of the other Temmies, me smiling at them.

"You'll probably be very popular with the humans when we get to the surface, little ladies. Just keep doing what you're doing and you'll probably have a lot of kids when I break the barrier and we integrate on the surface," I smirked.

"YAYA! Soo happee! Can't wait!" they cheered as we then left and we saw that Chara had since stopped sneezing and that MK looked at me with a smile.

"Yo, how'd it go in there?" MK asked.

"Well, almost all of them were begging to have sex with me, but I can't really risk doing it too much or I'll run dry. So I simply requested I do it with 3 in total, and the rest would be saved for later... let's just keep going," I smiled as we then went through to the darkening lantern room and, after that, we then went forward further into Waterfall until we reached the room of Echo Flowers, where we heard a passing conversation when we poked them.

"What? You're saying that the one human has a monster soul on them? Are you sure?" Undyne's vocie asked from the first flower.

"Yep, and they also have a higher LV because of it. If left to their own devices, those two could hurt a lot more," said Butters... stupid lying weed!

"Then why did the one human save MK when she was about to fall onto sharp rocks?"

"Heehee, that's all a part of her plan of deception. Just trust me, all it would take is for her to be put in a situation of pressure, and POW! She'll gut the closest person to her!" Butters smirked.

"Hmph, I'll see to it that they're killed, then. If I find out you're lying about this, I'm gonna pull you out by the roots and throw you into the glowing water," Undyne growled.

"Hehe, you'll see," Butters said before we reached the end of the room and we then saw the long rope bridge, us then going across slowly, mainly because we didn't want MK to fall down again. Luckily, the bridge itself was quite sturdy, so we didn't have to worry about swaying or anything. And after one more room, we then found ourselves in the entrance to Hotland, where Undyne sent a spear down in front of the cave from above the tall rock wall.

"I knew you'd come, humans. They all did, and they all fell," Undyne frowned. "We only need one more soul to get to the surface... and from what I was told, one of you not only has killed before, but you also have a monster soul combined into you. It's the gray one, isn't it?" Undyne asked, Chara speaking after.

"You may not believe me, considering your history... but I remember you when you were just a kid, Undies," Chara said, which made Undyne take her helmet off and then glare down at Chara.

"What. Did you. Just call me?" she growled.

"It was your nickname in school. Don't you recognize me?" Chara asked, me seeing that Butters wasn't around, so we were safe... or I would say that before Undyne then jumped down from the roof and then glared angrily at the fallen child.

"Who the fuck are you? Tell me. I don't recognize you one bit!" Undyne growled.

"I don't blame you. I'm usually wearing a green and yellow striped shirt... my hair used to be brown, and-" Chara was about to finish before Undyne gasped.

"Charlotte?! Wh-What?! I refuse to believe this! I saw you, dead as dirt! H-How are... I demand an explanation!" Undyne growled.

"Fine, but allow me to assist with that, in case of witnessing eyes," Gaster said, which made Undyne surprised, but not nearly as much as the fact that time stopped all around us, which we noted when we saw a drop of water stop right in front of Undyne's face that came from the ceiling.

"Um... what's going on?" Undyne gulped.

"I shall explain from the top," Gaster said before then explaining the same thing we had to the others, only telling the whole truth to Undyne instead of a half-truth, including the fact that Butters was hoping to kill us so she could steal our souls and become an unstoppable murderer. And after finishing the explanation, Undyne frowned at us before then looking at me.

"You, how are you able to do all that? What kind of powers do you have?" Undyne asked, me then showing off my unique soul, which Undyne looked at in surprise. "Whoa... is that a Peace soul?!... I didn't think they were real... no wonder you were able to do that... can you tell me anything else?" Undyne asked.

"Only if you apologize to MK for trying to kill her," I said.

"Fine... I... I'm sorry about that. I thought they were controlling your mind," Undyne admitted.

"Naw, they're actually very nice. A lot of monsters we've encountered, including me, have gotten pregnant thanks to Cherry," MK said, which made Undyne surprised before then looking at my crotch and then speaking after.

"I see... hmm... very well, meet me at my house later. I want to talk to you in private," she said, me nodding as she then went off back to the west, which is exactly when Callie called me.

"Hello?" I asked.

"HELLO, CHERRY! I HAVE AN INGENIOUS PLAN FOR YOU AND UNDYNE TO BE FRIENDS! MEET ME IN WATERFALL AT 7 PM SHARP! WE'RE GOING TO HAVE A GREAT TIME!" she smirked into the phone, me smiling at that.

"It's a date," I smiled, as Undyne was since long gone. Our group then simply took a rest break and I looked at the clock, seeing that it was 4 PM as of now. So that meant we could make a quick stop at Hotland to meet up with the nerdy dinosaur.

"Welp, we don't have much else to do for 3 hours, how about we go to Hotland and see what we can do there in the meantime?" I smirked, MK smirking at that.

"Oh, heck yeah! I've been meaning to visit Alphys for awhile, now! Let's go!" MK smirked as we then went down the road ahead, me then letting the spiders out of their box as we reached the sign, which they were quite happy about.

"YAY! We're here! Let's go find momma Muffet! Bye, friendly humans! We'll be sure to let her know all about you," they said happily as they then crawled towards the hot air of Hotland and proceeded to crawl and shoot webbings up the different elevators as we then got to the lab, us going inside and seeing that it looked very dark and that the cameras were focused right on us on the big screen.

"Uh, who's watching us like this? That's creepy," Chara gulped as we then went to the east further until we then saw the elevator open up and for Alphys to speak to herself without seeing us.

"Chapter 25 Subsection C. Seeing some promising results from Lemonbread... she's actually singing from time to time... it might be because of the human, but it won't work unless I can get her help. Need to find a way to-" Alphys was about to finish before she turned the lights on and she saw us, her looking to be having a moment of speechlessness before then having a bit of a panic attack.

"Oh no, oh no, oh no! H-How much of that did they hear?! Oh god, the cameras heard all of that! D-D-Don't be weird Alphys, just focus, ask for help, can't even think right, I-" she was about to freak out further before I then came to her and gave her a gentle hug, which Alphys was surprised by before then accepting it and crying a bit.

"Alphys, it's okay... take a deep breath... and out... in... and out," I said, her then doing the deep breathing and sighing after.

"T-T-Thanks... s-so... c-c-can I ask you f-for some... some help?" Alphys asked, me sighing at that.

"I know what the help in question is, and before I do so, I need to ask if I can have my friends come with me?" I asked, Alphys looking at them and sighing.

"O-Okay... I j-j-just hope it works... if it doesn't... I don't know what I'll d-d-do..." Alphys said before we then followed her into the room that she exited and, though it clearly said bathroom, it was, as expected, an elevator.

"Speaking of, I should probably go to the bathroom, soon. I've been busting nuts all day so far," I admitted.

"U-Uh... yeah... say, are you okay with being the star of... accidental pornography?" Alphys asked, me sighing at that.

"Let me see it first, then we'll talk. I know that you've been filming me in certain parts of the Underground..." I said.

"I know you do... I've been through this so many times in s-s-so many ways... it's always the same, though..." Alphys admitted.

"Wait... you're aware of it, too?" I asked.

"Y-Yes... I tinkered with some of Gaster's stuff... and saw the time loops that happened in different dimensions... I... I need to think straight..." Alphys sighed as the elevator then reached its destination and we exited into the True Lab, which MK looked at in concern.

"U-Um... how long has this been here, cousin?... I don't remember this part of your lab..." MK asked in concern.

"It's... my real lab... where I experimented with... the souls..." Alphys sighed as we then had to be prepared. We were now in danger territory, since we were in an area where we couldn't contact anyone else and where the Amalgamates resided.