Undertale & Deltarune Oneshots

☆Fights- Gaster & Sans

Plot: Sans is insecure about how much his dad actually loves him. He starts getting into fights at school in an attempt to gain Gasters attention. But when Gaster is called to pick him up one day, will the truth finally come out?

Requested By: Hoi370

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Sans always had a close relationship with Gaster ever since childhood, never once questioning the love Gaster held in his soul for his son. He would always let Sans assist him in the lab, play games with him on breaks, help with with homework, anything that a normal, loving father would do for his son. Though, as Sans grew older and entered a high school setting, some things started to change.

When word got around that Sans and Papyrus were the sons of the royal scientist, the two schools had completely different reactions. Papyrus was praised, all of his friends admired him and told him how lucky he was to have such a cool dad. Sans on the other hand experienced something different. The other teens raised some questions in his mind. How much did Gaster truly care for him and his brother? Was everything that he had been doing for them some test? One giant experiment? Was that all they were to him, an experiment?

Sans went home everyday feeling confused, almost scared of the answer he would receive if he brought it up. The more he thought about it, the more it seemed that Gaster was pulling away from him. The more it felt like he was losing any attention and love from his father.

The young skeleton couldn't take much more after weeks of taunting and questions. He decided that it was time to shut them up and show them that he could gain the attention of the scientist. With a little provoking from another student, they fought. Sans came out victorious as intended, but of course not without a few bruises to the skull, arms, and legs.

The walks home with Papyrus seemed to drag on more than usual, the only thing the younger skeleton seemed interested in was the reason his brother his his face with his hood, and of course he narrowly escaped his father when they arrived home.

The same thing continued for weeks, Sans getting into small fights and having to hide the small bruises from his family. Though like Gaster had always told him, he can't hide things forever.

The following week after his latest fight, Sans was provoked by a small group of monsters. This was his chance to finally show Gaster that he was worthy enough to be his son! This was how he gained his father's attention! With some provoking, the fight began.

Punches were thrown, magic was used, and in the end, it seemed that neither side was in any condition to win. And it was over as soon as it began with a teacher coming between them, which ended with Sans sitting inside the principals office with Gaster on the phone.

Sans had his head facing the floor, ashamed in himself for essentially losing the fight and knowing that he was in a world of trouble when Gaster arrived. Not to mention the aching of his bones from the deep bruises that formed and a slightly cracked rib from a hard kick that hurt like hell.

The principal explained everything to Gaster when he arrived, and the scientist looked over at his eldest son, confused more than anything. Sans had never acted out like this before, and he could sense that something else was wrong, but that was a conversation for another time. Right now, a punishment was in order.

"Sans, let's go," Gaster said sternly, though the younger skeletons gaze never faltered from the floor as he grabbed his bag and followed his father put of the school.

It was nothing but silence until they were far enough away from the school and other parents, which is when Gaster decided that now would be a good time for conversation.