Board Thread:Questions and Answers/@comment-32948273-20160129174948/@comment-26347196-20160129194403

Well, do notice that Flowey has his own "determination", or SAVE file.

In that SAVE file, he must have done something to wreck the entire world.

He was able to control it, until Frisk came with his own determination.

And, apparently it took less than 7 human SOULs to make Flowey regain his powers.