Undertale starts with Sans' abilities

……

"They left...Are you okay?"

Liu Yang turned to Lushan and asked

"Nothing? I was thinking something was wrong."

Green shirt raised his eyebrows and continued

"That guy ran away halfway through the fight. I want a more satisfying fight."

After a pause, the green shirt added,"At least I don't have to fight that brat the same way for another 300 rounds."

"Haha...really?" Liu Yang laughed dryly.

"Since you are fine, I won't cause you any more trouble."

"See you later!"

Liu Yang opened a portal.

When Liu Yang had half of his body in the portal

"Wait a minute."

The green shirt suddenly called out to Liu Yang.

"What happened?"

Liu Yang's head, which had just entered the portal, came back out.

"Uh… Actually, this place looks pretty good, doesn’t it?"

Green Shirt scratched his head and said casually.

"So you want……"

Liu Yang pretended to understand.

"I want to go with you. After all, this place gets a bit monotonous after staying here for so long, doesn’t it?"

"No problem."Liu Yang agreed very readily and entered the portal first.

Green Shirt looked coldly at the save point at the end of the corridor, and then stepped into the portal.

"Is this... a store?"

After Green Shirt passed through the portal, he opened his eyes and saw rows of shelves and dark brown floors.

"Yes, my shop." Liu Yang put his hands behind his head.

"I have something to do now, so let my friend introduce you to the place."

Liu Yang disappeared in an instant, and three skeletons who looked very similar to him appeared in the place where he left.

"Hello, my name is Geno."

Looking at the hand extended by one of the skeletons in front of him, Green Shirt hesitated for a moment, but finally shook it.

…………

"4 members, what do you want to do?"

The system's synthesized electronic sound rang out.

Liu Yang was still half-lying on the chair as usual, with his eyes slightly closed.

"Confidentiality"

"…………I found you're a little bit"

"Hmm? How can you say that to me? I'm so sad." Liu Yang said this without blushing or beating his heart.

System:"……………Oh, humans"

"Then what do you mean by returning X-chara and that half of the soul to him?"

Liu Yang opened his eyes slightly and glanced at the electronic screen floating in the air.

"That [cover] is a hot potato, it doesn't matter if I don't have it, anyway, I can't bear to exchange half of my soul for it"

"I have achieved my monitoring purpose for XG"

"I let X-chara go because although he is my ally, I am afraid that X-chara's murderous nature will bring trouble to our world."

"………………"

"However, it's their turn to invade the main world, and I should prepare something."

……………

Overworld…

"Doctor, we brought the person back."

X-Ephis brought the tied up X-chara to XG's side

"Let him go, I believe...he won't do anything stupid"X-G spoke indifferently

X-Efes looked at XG, then at X-chara, and finally helped X-chara untie the ropes.

X-Chara slowly woke up, and when he saw XG, he couldn't help but gather a knife and slashed at XG.

However, at the same time, a knife was also placed on X-chara's neck.

X-Frisk looked at him with indifference.

"Bro, you've crossed the line."

…………