Outside:

Near a harbor that was in the city, someone was walking across a road that stood next to the harbor and even branched out to other roads that led to the wooden plank docks of this pier. The lady wore a long, short-sleeved, white dress, with a turquoise cape and hood. She wore a light yellow tunic that reached down over only the whole front of her dress, and she wore a yellow rope sash around her waist. The tunic was embroidered with turquoise strings, and she wore golden bracelets on her wrists. She was a goat monster, with small ivory-colored horns on her head, all white fur, and tuscan red eyes. Although she had two visible fangs and claws, she wouldn't harm a fly, considering that she was the embodiment of Life, Toriel.

As she walked, which seemed like she was floating with every step, she found who she was tracking. He was looking out towards the sea, as she walked closer to him until she was a few feet away from him. She figured that he may be upset, especially with her since she intervened in his attempt to capture Curtain's Soul. After a moment, Sans signed, which informed Toriel that he knew she was there.

"How did you know I was trying to get her Soul?" Sans asked, although he didn't turn around.

"We have been friends for a long time Sans. I noticed about a month ago that you were more aloof in your work than usual, and Papyrus has informed me that you have been a little forgetful, especially recently. Although Papyrus was not entirely bothered by your tardiness, Gaster felt that it was a sign of trouble that you were going to get yourself into. I told him that I would investigate, and as you were watching Curtain for the passed week, I was watching you," Toriel replied, in a calm and caring voice.

"Heh. So that's what happened. Although, I've actually been watching Curtain for six months now," Sans said, as Toriel's eyes widened.

"Six months? You have had your eye on her for so long? That is so much longer than any person you have watched. You have only ever lasted a month or less," Toriel said.

"What can I say? She really got to me," Sans said, as he turned towards Toriel.

"I just wish you hadn't gotten involved. I mean, your one of my best friends so I wouldn't feel comfortable at staying mad at you, but I am quite crossed right now," Sans said, as he looked downward, while Toriel nodded.

"I am sorry Sans. But I could not let you take her life. It's my duty to create and preserve life until it's time. You were trying to take her life before her time, and you were trying to keep her Soul, the very culmination of her being. I couldn't let you do it, and I am sure Gaster would deeply disapprove," Toriel said, with a sadness in her eyes.

"Yeah, I know… but what does he know about this feeling I get whenever I hear her name… whenever I see her face… whenever I think about her? I thought it was fleeting, but it only grew stronger. He may be really smart, but he doesn't understand..." Sans said, as he turned away from Toriel.

"Sans, he does understand. I can guarantee that Gaster understands the feeling of love, even before you and Papyrus were created. He cares about you and your brother too. He loves both of you, especially since he considers you two his kin," Toriel said, kindly.

Sans signed, and said, "I know… but I don't want to lose her… I know death, I am Death. It takes, while Life gives. I don't want Curtain to be taken from me… I finally feel something worth so much, and I can't bear the thought of losing it. I won't… She will be mine in the next month."

"Sans, no. Please leave her be. She is mortal. The Earth is her home. Do not force her to be with you," Toriel pleaded.

"Heh. I won't Tori..." Sans said, as he turned towards Toriel, and she noticed that his expression held a smirk.

"Curtain already made a deal with me: If I can make her fall in love with me in one month starting later today, then she will willingly give me her Soul," Sans said.

"What? You made a deal?" Toriel asked, surprised, especially when Sans showed her his forearm and the String of Completion glowed golden in an eye-shape.

"Sans… your really serious about this… but what about your brother, and the others?" Toriel asked.

"Promise me you won't tell them until after the deal is concluded, and if anything, I should be the one to explain," Sans said.

Toriel thought about it for a moment, and then she said, "Alright Sans. I won't tell them, if you let me keep an eye on you two for the remainder of the deal. I will also send Frisk to keep a special eye on Curtain. Okay?"

Sans thought about it, and then he nodded and said, "Alright. I'll hoove you to that Toriel. I won't goat mad if Frisk knows though. She won't tail on us."

Toriel chuckled, and said, "Oh Sans, you really killed the mood. But please be careful, especially with Curtain. She has a skull personality. Her will is death-defying. She won't be swayed so easily."

Sans chuckled, and said, "Good ones. I'll catch you later then. I want to take some time alone for awhile, if you don't mind."

"Of course. I will see you later," Toriel said, and then she turned to leave.

Toriel opened a portal to head back home, and she turned to Sans and asked, "What did you offer her if she wins?"

"… A part of my Soul so that she wouldn't have to worry about me coming back," Sans said, seriously, as he turned back towards the ocean.

"W… Why?" Toriel asked.

"If I want her Soul, why not offer mine?" Sans answered.

Toriel considered his response, and then she left. Sans stood under the light of the full moon, recollecting his thoughts, until the sun started to rise. At that point, he had to leave so that no one would see him. He traveled to a remote location in a forest, as he thought about his appearance and came to a solution.

Let the deal begin...