Prologue

A 13 years old teenager had died and was reborned as enma sans in this au it's seen or be seen meaning like hide and seek but if you've been seen you'll die, the seeker is a huge monster roaming around in snowdin, waterfall, hotland, core, even at new home. this huge monster was once contained in the true lab but they escaped and now killing every monster it hears/sees, other monsters is hiding at their home or somewhere safe...others didn't survive