Never Forget (Asriel x OC)

Espeon and Asriel has been friends since they were only kids, they would get into the mischeif, wander in the woods and explore together, that's how they met Chara.

But after Chara died and was soon followed by Asriel, Espeon fell into a deep depression, but in a matter of time, the support from Papyrus, Sans, Undyne and the other monsters in the underground mended her broken heart.

But is Asriel really gone as everyone believes? And why does a small, yellow flower seem so familiar to her?