Alas, it's been cancelled. Constructive criticism is useless at this point. Thanks for leaving this up, it was enjoyable while it lasted.

I am really liking this so far and I hope you continue. I'm looking forward to how Chara and Asriel will react to Flowey being the Asriel of this timeline.

Uh when's the next part coming?

Hm...

It feels too much like you're trying to follow Undertale. Most of the dialogue on the part of the canon characters has been the same, except for differences to account for multiple people being present, and a lot of the variation in conversation is really just Chara and Asriel making statements or posing questions that show their similiarities to Sans and Papyrus.

Some parts are extremely forced in this regards, cramming all three of them into the date with Papyrus and keeping the largely identical dialogue which flat out doesn't feel remotely natural. What few changes are made to account for the larger group, and one of a combination of personalities, are in small snippets that have the feeling of just being patchworked into the side of the story, which is mostly "exactly like Undertale, except with SS!Chara and SS!Asriel ".

You haven't really explained why Chara, despite having a fight to death death with a Frisk just recently, didn't actually act against Frisk once she saw them again. Additionally, Frisk is almost a nonentity in this; all the actions that would normally be done by Frisk, are done by Asriel or Chara, with Frisk largely just being there, typically acting _after_ one or both of the others have done something-and usually doing the exact same thing as one of them (mostly Asriel). The sole notable thing about them is that they make Chara wary.

I love it and that ok

Asriel had when he used all of his power in the rage against Frisk (I liked the fight).

Great fanfic I'm really enjoying it.

xD

Oh, look. An update. Nice, nice. Even though the part with the nightmare confused me and made me go: "Wait, I thought they were in UT universe?! When did they return to SS? And why Disbelief?!" But then the truth came out, and I was like: "Wow, nice nightmare, bro!"
Huh, I sound pretty insensitive here, but meh.
Anyway, excellent chapter. I love it. So please keep up the good work, and update soon!

i love it

Wow. Just... wow. This is an amazing story, what with Shift's Azzy and Chara having been to Geno and back, and Chara not trusting Frisk, and all that. Looking forward to the Gauntlet of Deadly Terror, which I know Asriel will probably try to solve.

i really like it

i like it and flowey xD

this is good! finally!

i like it and where's dad hum...

I'm going to give you two choices: stop beating yourself up, or I'll personally send Demon Frisk to do it for you!
This is surprisingly good! Sure, you have some minor slip-ups here and there, like missing a seperator/line between Toriel getting the news of Erika and hearing Asriel shout, but there's NOTHING else wrong with this!

One thing I'd like to point out tho is that Chara is supposed to have her eyes (whatever color you chose them to be) light up a demonic red when she gives it her all, because red Determination.