err...that channel even say there is no Movie without sin:eyebrow:
but this sin is like you Questioning why every main hero should be main hero, why not everyone is main hero and main villain?
Why Batman must meet with Joker in Gotham city?
Why of all planet, human must live in earth?
There is a reason for that, it become Cinema sin if there is no explanation for that
Ryouma has explained that Crack appear in every country but Zawame City just have more Crack appeared, so indeed there is Helheim Intention to challenge whole of earth.
But Japan Yggdrasil do the first approach, even open constant Crack in their base, while other country Yggdrasil just stay put.
Of course conflict will be first happen in Zawame
if it is about other country challenger, just like i said before, it because Mai
There is no information about Helheim, they know about it after Roshuo open crack all over the earth
and while they are busy to reveal its mysteries, Beatrider, Oren and Yggdrasil has been fight with Overlord, and Kouta win the golden fruit
Of course Helheim test still open, someone still can steal Kouta Fruit to become the new King, just like Redue to Roshuo
if there is anyone care about it anymore
Right now they are busy with Global Freeze phenomenon :castlerock: