Fond of owls
Movie 2 does not state their ages anywhere. The closest thing it ever comes to referencing their ages is Kojiro saying that they're "five years too late" to be talking about romance after Musashi claims that Satoshi & Co. are "ten years too soon". Which, yeah, if you take that 100% literally and assume that they are both claiming that literally the only time when talking romance is appropriate is when you're exactly 20 years old, they're 25. But that's... hardly a definite confirmation one way or the other.