[quote=@Menhir]
[@Eklispe]
Is there a reason why you're not taking damage?
[/quote]

Rules of the battle royale. For all participants, intrusion does not incur a penalty.

On an off-hand note, now I've been looking at Dokurorider Heisei. It's been putting in work, certainly as an ace monster, but I also realize, that for its summoning condition, it's actually really underpowered.