No worries, this is just a security precaution
There are almost no exceptions, no matter who they are and what kind of personality they have (Sho and Kenzan call him "Aniki" which roughly means "boss" or "big bro") because they admire him)
You can spend those counters to gain 500 Life Points per counter, or you can inflict 300 damage to your opponent per counter
Supreme King Dragon Dark Rebellion X DARK Rank 4 [ DragonXyzEffect ] ATK 2500 DEF 2000 2 Level 4 DARK Pendulum Monsters Once per turn, before damage calculation, if this card battles an opponent's monster: You can detach 1 material from this card
Perhaps I have finally found the long lost 3 archetype deck fusion Ive been looking for that actually works (sorry Gladsworn Blackwings, you just werent a good enough)
Also, the appearance conditions of the WORLD CHAMPIONSHIP EDITION packs are greatly relaxed compared to previous works