It was... Another Night... You were watching Youtube as usual but Suddenly You stop and feel urge to look at Window... You go to it and look at it as You see a Rainbow Portal appearing at outside of your Mansion... but... You remember That Monster kind was freed... But... You don't care... As you stop looking at window and walks to bed as you lay on it and Fall asleep... However you wake up as you see a blood trail... As you stand up and follow it... you see a corpse of your family... their bodies are impaled... with bones... then you see a Color Sans but... wait... His Rainbow eye lights shape changed into Hearts... He has blood on his Jacket...

Yandere Color Sans: Heh, Human kid... Now... let's just say... You have no where to run...