Always hard to be sure just from photographs but I don’t see any red flags, I think your card is real. At this stage in the ex era they were trying a new reverse pattern every set.
appreciate that. I am aware of the pattern for this set and the other patterns since they were introduced in ex Hidden Legends but I’ve no seen a reverse holo have the reverse pattern on the non reverse part where it was not a holo bleed.
A lot of the “reverses” from this era feature holo within the art box and not on the surrounding card. So technically in this case calling them a reverse is a misnomer, however because the way they’re inserted into the packs matches earlier true reverse holo cards, the convention is to use the same name.
Only the first four sets from the ex era feature true reverse cards, the rest of the sets from ex Hidden Legends forward have the holo within the art box.
“Reverse holo” is a community term, the Pokemon Company actually calls them “Parallel Set” holos. Usually they’re the frame-and-text-box holo instead of the artwork, but in gen 3 specifically they applied a ton of different alternative foil patterns inside the art box itself, which is why the term can be confusing for that gen. Nevertheless, great card and very real!
The card is real imho.
Using holo bleed as a way to distinguish between real/fake copies isn’t helpful, as it’s just a byproduct of the manufacturing process (not something intended to always be present). Even when it’s much more common, like for ex emerald ones, it’s not a 100% guarantee
It’s a different type of holo bleed, without actually seeing the holo shine itself indeed, but it’s still with roughly the same cause: the opaque white ink layer was too thin to block out the holofoil layer where it shouldn’t be visible.
I personally call it ‘shadowing’ in my personal checklists. It’s especially common to see on modern Sequin Holofoil cards, but I’ve seen it on many other type of holofoil cards including EX reverse holofoils as well. To quote my own collection thread: