After going through the 4th Domina's plot, I can't help but wonder how did the rest of the Champions that have fallen after the 4th Domina beat the 4th Domina? To get to the 5th and later, you have to beat and break the seal of the 4th. So they must have beaten her before. Why didn't Lavanya tell us how did the Champions managed to overcome the 4th? In fact, why didn't she briefed all of her champions when she chose them? Why didn't she help the hero in the beginning? Like giving him some clues and maybe have him store spare equipment and supplies in case he falls.
This is a major plot hole for me.
Also another thing, breaking the seals destroys the Domina's power as stated in the game. Given that earlier Champions have beaten Dominas before you and proceeded further, they must have broken the seals of the earlier Dominas. And yet when the current champion meets them for the 1st time, they already have their seals. So that means they needed some time to recover their strength and restore their seals. Does this mean Lavanya can do the same as well after the events of the 4th Domina? The current champion could just survive long enough for her to restore her strength and she can summon new champions again.
This plot hole wouldn't have existed if they were allowed to skip some Dominas. Kinda like a tier system. 3 Dominas in 1 tier so 5 tiers with the final tier only having 1 Domina for a total of 13 (3+3+3+3+1). Beating either 1 from a tier allows you to proceed to the next tier. Of course they could chose to beat the other 2 from the same tier as well. In that system, it's easy to justify seeing fallen champions after the first few tiers. You could still have the final Domina requiring you to beat all of the other Dominas before her in order to stand a chance. This way it would solve a lot of the plot issues.