I can understand why the members left from fromis_9

When you're in a situation where there's no economic improvement, being solo might feel more comfortable if you want to try and achieve something...
In fact, Seoyeon seemed more interested in her activities as a singer-songwriter rather than being an idol..
I don't think anyone could have truly predicted that the group of five would split up like this.
Jiwon becoming a model for IBK (Industrial Bank of Korea) is a true human victory ㄷㄷ