Wait neither asgore nor toriel knew healing? I'm a little surprised they died to a simple shank. Whoever that guy was, fuck him. Azzy was to soft to let Chara get revenge. He's going to be even sadder if he remembers as flowey
At first I wanted Toriel to try healing them, failing, but then I though "OH WAIT, what if Tori decided to learn healing magic BECAUSE she couldn't save her child?"
But even if she knew healing magic, it wouldn't have worked.
That shank hit Chara's chest, where their soul is, which is basically like a headshot in my AU.
Plus they bled all the way up the Mount Ebott... (Asriel was holding up only to see their parents... before collapsing).
About that guy, we'll talk about him in Chapter 1 °cracks knuckles°
And yes! The whole plot will revolve around Flowey trying to "fix his mistake" and make it up to Chara. One way or another =)
But was it all his fault...? =(