Judgement Hall

After a failed Genocide Run, the reset glitches. Frisk finds themself in a black void and a group of 7 familiar demigods fall into what remained of the underground. It takes a while for Sans to overcome his injuries and realize that the reset hadn't worked. He ventures the underground in grief to find a gathering of children. Human children. The demigods came here after Chiron told them something felt off around the area. Meeting a mysterious, punny skeleton was unnerving, but there seems to be a darker force around them...

Undertale Belongs to Toby Fox and Percy Jackson belongs to Rick Riordan.