basically, it could also be called other things, since aftermath means a consequence occuring after a terrible event, which could be for the genocide route
basically, its undertale but it's continued, you escape the underground and go back to your home village

you get the choice

WHAT HAVE YOU CAUSED TO OCCUR?
ANARCHY (genocide route) - PEACE (pacifist route) - NEUTRALITY (do i even need to say this one it's in the freaking name)
there will be 5 endings
TEAM HUMANS

(pick anarchy but do pacifist after that)

TEAM MONSTERS

(pick peace but do genocide after that)

TEAM PEACE

(do pacifist on both worlds)

TEAM ANARCHY

(do genocide on both worlds)

TEAM NEUTRALITY

(do neutral on one, or both)

basically i can continue my idea if you want but tell me if this idea is good first