What to do after Sparing Flowey?

[Lucid]

So, I went to Omega Flowey/Flowey Boss and I Spared him. It went through the credits and that stuff, and then it showed Flowey again saying something about going back and a better ending? And now I am back at Asgore/my last save point. What do I do?

[dat_potatoe]

I assume you haven't killed anything.

Go hang out with Papyrus and Undyne at their homes.
Then you should get asked to deliver something for Undyne.
Self explanatory from there.

[Madi]

if you did happen to kill people, flowey was very precise. prove you're strong enough to him. get back to the end, from the start, without killing anything, and he won't kill the king.

[Christou doulos]

Befriend Papyrus and Undyne if you haven't already.
Go to the Core, on the way, you'll be asked do something for Alphys.
This should take you to the happy ending. (:

[Zweetbek]

I have the same thing. I killed monsters, so I guess no happy ending for me right? So you have to redo the whole game?

[Madi]

Originally posted by Ceres:

I have the same thing. I killed monsters, so I guess no happy ending for me right? So you have to redo the whole game?

like he said

get back there

from the start

with no killing

and he won't kill the king