Wouldn't that fit Dialga a little better? I can get where you're coming from, since Lugia is the rival/opposite thing to Ho-oh, though.
Well, the actual reason for it was because Lugia and Sakuya both are silver :V Lugia is the Silver Bird, and Sakuya has silver colored hair and silver knives.
Also, remember that girl in my class named Marissa (with two s's, yes), and how I constantly think of out favorite witch whenever I talk to her? well today, she talked to me about how she's
going out tonight with her girlfriend.MARISA HAREM TIME(Un)fortunately I misunderstood my clasmate. I initiatly thought she meant she uhhh... 'swings the other way' (leading to the connection I made), but apparently they're just going out as friends to find potential boyfriends at a club.
I think I wouldn't have been able to hold in my laughter if said friend's name actually was Alice.