So when the barrier was broken, how did starting a war go for Asgore, and when did Undyne go through her (VERY NECESSARY) character development? Actually, how did everything Frisk would normally do be... done? Obviously things can still happen without them, I guess I'm just wondering how much longer that took?
Somehow, I never thought to explore exactly how everyone went through their character development that they went through in the game. Huh.
Since a lot of what happened occurred around Classic's acceptance of Frisk's deletion, I'm going to sum it up.
Classis struggled with recognizing that Frisk was deleted. Many times, he would mention things that Frisk would do in a pacifist playthrough, which started a-many uncomfortable moments for him when he had to hastily backtrack.
Over the year between when Frisk was deleted and the barrier breaking, while it wasn't identical to a pacifist playthrough, many of the characters began to veer toward their post-pacifist personalities (Classic may have poked a few buttons to get this rolling, plus something else was pushing everyone in that direction as well).
For example, Toriel began to leave the Ruins to visit Snowdin. Alphys revealed her experimentation with determination to Asgore and gained the courage to formally ask Undyne out. Undyne's shift was the most long-strung. She vehemently continued her hatred of humans. It was actually Asgore who helped her began to ease her resentment a bit (plus lots of other stuff happened- *drabble idea*).
For Asgore, he never really wanted to start a war- he simply wanted peace. So when the barrier broke, he easily accepted humans' attempts at cooperation.
Lots of other stuff happened during this year, but those are a few of the most major changes.
