Um. Pandora Box used to call forth Evol Trigger or any item inside to destroy planet which is emptying every bottle inside. Evol use Soichi to refill its essence - Got drained by Vernage - Refilled again by Misora - Emptied again by Evol - Refilled again by Vernage.
Vernage plan got throwed up by Evol multiple time, so she make last bet at refill pandora box. By make Sento become another fucked up entity like Evol, which is failed again because Evol take over his body. Lol. When Build's final form going come out?