Hi Alex, and welcome!
I'm pretty close to your age as well, so yeah we do have several members here aged in their 20's. Most are usually long-time fans like me, even though I didn't play a Pokemon game until the days of Ruby and Sapphire. Glad to see you're enjoying Platinum, HeartGold and White. Such great games, I do love Black/White and Black 2/White 2 a lot. If you want to discuss those games you should head over to
Black and White as well as
Fourth Generation Games which have discussions covering said games. I hang out in those parts a lot so expect to see a few posts from me there.
X and Y are also gonna be awesome, I've been a fan of the starters since they're so cute (however my all-time fave will always be Oshawott from 5th Gen) and if you want to discuss all things X and Y, head over to the
Pokemon X and Pokemon Y which should have it all covered, including its own General Chat thread. Thankfully I'm prepared already since I got my 3DS XL last Christmas. Still can't decide which starter to pick when I get the games cos they're all so cute!
Also, I see you're into Korean culture. What made you like it so much? I've only heard of Gangnam Style (which is still catchy lol) but I like Japanese culture better, as well as my home country of Australia. If you ever need help, feel free to ask any moderators like Cirno above me, or any of those other bold blue guys. They aren't too difficult to spot.
Have an awesome time here and send me a VM if you need to talk.
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Hikari10