5 years have passed since Reaper left his au and never came back.
The whole residents in reapertale regretted for being harsh towards their Sans, Reaper.
They made a big mistake. They hurt their real Sans and they thought that he is just a mistake, a copy version of him, an imposter and trying to replace their Sans. They wanted to fix their mistakes but it was too late. They have the feeling that Sans will never forgive them and trust them anymore.
Reaper's father and his brother tried to find him and apologize to him but they couldn't find him. They tried to asked and searched the whole multiverse until they gave up. There is no point for them bringing Reaper back.
Reapertale Gaster, regretted and failed as a father. Reapertale Papyrus, felt disgust to his own actions and admitted that he was a terrible brother. As for the others, they can feel their sins crawling to their backs and they all questioned themselves, 'what kind of gods are we? Why do we all deserve this?'
~In Reaper Sans room~
Reapertale Papyrus or Grim laid down on his brother's bed and gripping his old clothes. Tears slowly coming out of his eye sockets and started sobbing while saying "I'm sorry" for multiple times. Grim hated himself and he wanted to make things. But how? He hurt his brother ever since his 17th birthday but that was the past. The past that he gave his brother a scar on the back. Not just a scar from the back but also a scar from his brother's soul that can be hardly healed. He knows that Reaper can't die and the only could kill him is to get thrown into the void. But what if... Grim shook that thought and trying not to jump into conclusion.
__________________________
Somewhere in another place.
Core Frisk never knew what happened to Reaper until they found out, even the whole residents of omega timeline except the others are not in the omega timeline. Core Frisk was concerned about Reaper but they couldn't do anything but only to comfort him.
Actually, Reaper is a female, mentally and skeleton monster don't have gender except in mental mind.
Reaper didn't mind being called difference pronouns as she/her, they/them, and he/him.
Reaper was a girl when she was alive from her previous life and she didn't expect that she would reborn as a grim reaper that was named Sans. At first she was disbelief but she accepted it life afterwards.
Later that day, Reaper was sitting on the edge of the big rock as she was stargazing in outertale. Not knowingly that someone was watching her or perhaps stalking from the black screen void. A glitching skeleton, wearing a white jacket, white shirt, black sports shorts, two white socks, white slippers and red long scarf. They had a red bleeding slash on his in front the body and a white glitch on their right eye. They watched in awe at Reaper and admiring her.
They or he looked like they had an obsessesion over a skeleton, which is Reaper. He couldn't looked away from her for more than 2 hours. He wanted to keep Reaper, all to himself. He wanted to claimed her and he will make sure that no one... No one will steal her from him.
'Wait- Am I obsessed over a grim reaper!? What is wrong with me!.... Fuck... This isn't good... I needed to stop this obsession... but...how?' He thought for a moment before he let out of grin.
"Ah screw it... " He looked back at the screen and as his eye light turned red heart. "Oh darling~ I'll make sure that you'll be mine, forever~" he darkly chuckled and his red heart eye light . His grin grew and he looked like insane. "And how dare they hurt you.... You don't deserve them." He said as he keeps stalking Reaper.
Meanwhile in reapertale au, they let out of sneeze and felt like someone is mentioning them. But who? Who knows...
