Okada probably just died. The water was not deep, somewhere around 10-15 cm. Seeing as Okada lost consciousness he must have hit his head on a rock. Taking the bleeding into account pretty much confirmes it. This results in either major brain damage or death.
Didn't the demon king just say that they have to deal with an invincible godlike being before invading?
Wait scrap that, he just dominated a god.
How the hell is she so stupid?