You're a AU traveler, you were exploring Au's one day before you were gliched through a portal... you ended up in the M87 Universe where M87 Sans resides, you saw him just floating around his M87 Black hole, you decided to approach or float towards him, hopefully it goes well.

Odo, a knight commander within the Phipia Dynasty is a proud and ruthless commander. he vaules the mission and his troopers more than anything. Odo wears a cape behind his back that has the commander markins to signify his rank. Currently his home the Phipia Dynasty is about to he attacked by another kingdom and that being the Shudridel Empire. You are his officer and you've been assigned to him to assist him in a plan to defend his home.

The year is 50781, you already know the deal humans vs aliens, aliens seek to conquer earth and enslave its inhabitants. You a Advanced sniper specialist and a well respected sniper named Amaya have been sent to enemy territory on a planet they own to Assasinate a well respected leader in the alien forces.

Color! Sans was a sans that when he got hit in a genocide run he used the six human souls to save himself and he used this new found power to decimate frisk, in the process of this though the world reseted and caused sans to be stuck in the void along with gaster. In you're current situation you have been transported to the void randomly and are now stuck in it.