An internet for you. To be honest, I had a weird sense of deja vu watching Dragon Crisis, but apparently wasn't bright enough to figure out that this was why.
Yeah, somehow Rose keep saying Ryuji many times did remind me of the other Ryuji although Rose's personality is somewhat a little different from Taiga.
In Asia mythology some of them involve a dragon up against a tiger. Of course, Rose is more of a western dragon but the old image of a dragon and a tiger challenging each other pops up in my mind.