In this Fanfic Chara and Asriel somehow get their bodies back and Frisk lives with them will be canon with most of my future one shots. So lets do this. Oh by the way Frisk's age is 10, Asriel 11, Chara 13, and Monster Kid 12

Warning first three chapters will be tickle fics. It's not the main point of the fanfic.

Toby Fox own Undertale

Ticklish Trio Arc: Chp 1 Frisk

It is a beautiful day today on the surface. Toriel and Asgore are off doing their duties as Royalty and the co-founders of Ebbot's monster School. Frisk was walking home from school by himself. His brothers went home early because they had high enough grades that they don't have to take the finals. Frisk was jealous of them cause the final was really stressful and long.

"Guys I'm home." Frisk exclaimed as he walked through the door. He didn't hear any response as he took off his shoes and socks. "Guys?" He looked in the closet. There were they're book-bags, so they were definitely home. He put his bag away and went to look in Asriel's room. He wasn't there. He went to Chara's room. He wasn't there either. He started to get worried. He went to his room thinking of calling them up. He laid on his bed thinking where they are.

"Hey Frisk"

"GAHHH!" Frisk jumped up on his bed breathing heavily. Asriel was hiding in the closet and Chara was hiding behind the door. "What the heck. Don't scare me like that."

"Sorry lil bro but we wanted to see your reaction." Said Asriel

"Don't lil me Asriel. I am the tallest of you two."

"Really?" Chara growled. He's really sensitive about his height.

Yep I'm the tallest, the smartest, and the most determined. Heh I also beat you guys at you dumb villain logic."

Asriel and Chara glared. "Funny you should mention that oh determined one. While we're extremely grateful for you saving us, you kinda owe us for ruining our nefarious plan."

Frisk raised an eyebrow. "Oh sure, so what do you have in mind?" Frisk said sarcastically.

"Well you can start by saying were the best." Said Chara.

"What? No way." Frisk said firmly.

Chara grinned evilly. "I was hoping you would say that. GET HIM!" They then both jump on the bed on top of Frisk, much to his surprise. They wrestled him down. Frisk was kinda strong, that much was obvious when he met Arron, but he's not strong enough to take on both of his siblings. Eventually they got Frisk on Chara's lap, with Chara getting him in a nelson hold, while Asriel sat near his feet.

"Guys what are you doing? Cut it out."

"Nope not until you confess that we are the best. But first I got a question for you. Are you still ticklish?" Asked Asriel

Frisk's squinted eyed went wide, he now knows what their going to do. "W-wait Azzy please don't. Please anything but that." he begged

Asriel smirked. "Thats not an answer." He then slowly traced a clawed finger on his foot. Frisk yelped and bucked in response. "Guess you have to be punished." He started scratching his soles, making sure he keeps his legs pinned down so they don't kick. Frisk was trying very hard to not smile. But he barely put up a fight. Soon enough he was giggling and bucking wildly.

"HehehehNohohohoHAHAHahahastohohp! AHAHAHAHAHAHAHA!" Frisk was squealing and his face scrunched up so adorably. Meanwhile Chara reached under to Frisk's armpits and started roughly scratching there. That made Frisk cackle like a madman. " NOHOHOHOHO! Chahaharahahah pleashahahe hahahahahmerhahahecy!"

"Not until you say were the best."

"Nehehehever. Hahahahahaha!" Frisk was laughing so hard. He hasn't been tickled like this since he was 8, back when he broke the barrier. Asriel then moved his paw under his shirt rubbing his soft furry paws on Frisk's belly. Frisk howled with laughter. This was torture, but he's still determined to not give in. After a while he lost the energy to run away so Chara let go of Frisk and started helping Asriel with his belly. Frisk was beside himself with laughter. Then Chara pushed Asriel away, lifted Frisk's shirt up all the way, and leaned his head over taking a deep breath. Frisk was wondering what they were going to do next when suddenly he jerked his head back and guffawed loudly. Chara kept giving him raspberries, and sometimes gave a couple of nibbles to his hips that got the best reactions out of him. All of these ticklish sensations coursing through him caused his Soul suddenly popped out. Chara and Asriel stopped to look at it, jealous that its determination exceeds their own. Asriel gave it a poke which made Frisk gasp and flinch. Asriel looked concerned at Frisk, but it didn't look like it hurt. Smiling he took Frisk's Soul in his hand and gave it a long lick. That made a bunch of bubbly giggles escape Frisk's lips. He then gave it a raspberry which made Frisk resume his laughter. Chara continued attacking Frisk's torso.

This continued on for about half an hour until Frisk finally gave in. "HAHAHAHOKAYHAHAHAHYOHOHOUOOWIN!"

"So tell us whose the best?"

"YOHOHOHOUHAHATWOHOHOHO!" And with that they stopped putting Frisk's soul back, leaving him in a fetal position, hiccuping. After a few minutes he caught his breath and looked at them with a glare. "You guys suck"

"Nope, you said we're the best." said Chara picking him up in a tight hug.

"I hate you."

"We love you too" said Asriel ruffling Frisk's hair, making him blush. "Now c'mon lets watch some MTT." They walked downstairs, Chara carrying Frisk bridal style much to his dismay.

Making these kinds of fanfics makes me now know what Alphys feels like, Trash. So yeah I felt like making a tickle fic. I'm actually into tickle fics, but I suck at making them. I'm just making at least two more tickle fics, Asriel and Chara (Don't know about Monster Kid), then I'm going to do other one-shots, revolving mostly around Frisk, Chara, Asriel, and/or Monster Kid.

If you have any ideas for a one shot please message me, I'll most likely respond back.

HAVE FUN!