Yeah, the plan was to have some events with Vi at the start but her content keeps getting cut to keep up with schedule. I'm going to add some stuff with her next update.
As for the Hero ... I think it's best that he's the last heroine to fall because in a sense I'm using him to pace the overall corruption. If he falls now, it will deflate the entire story and progression. So he has to fall last. But there will be some stuff with him for sure, that's been planned since day 1.
And thank you for playing the game, I hope you play the next update as well!
Thanks!