Flowey was mostly complacent for a while. He was content talking to Soda and, in part, it was actually getting easier to feel some emotions. Especially some sort of bubbly one that made his face red.
And even moreso of another emotion. Anger. But not towards Soda.
The more Soda brought him to school, in his little pot, the more he saw them. The more Soda brought him to his old home, with his bow, the more he heard them.
And the more he saw Soda cry, with all of his being, the more he wanted to destroy them.But he was mostly complacent.