Ooh!! Mine actually dates back to a long time ago!
While not my introduction to the games. My first introduction to the character PaRappa was back in 2012 during the time PlayStation All Stars Battle Royale came out and I played as PaRappa every single time because I loved his design a lot!
From then on I would go to look more up about his character and discovered PTR1 and UJL via YouTube! And this was also when and where I discovered his anime from the 2000s :D. I remember watching a lot of clips about that anime!
I also remember sometime in 2014 or something I got a PSX emulator on my android tablet and played PTR1 that way but didn’t really grow a fondness for it :/
Fast forward to current times (2020) where I finally gave his games another shot and I LOVED THEM!! I only played PTR1 via an emulator on my iPhone but I played it SO MUCH! If I remember correctly I racked up over 100 hours on that game alone as the emulator also displayed your total play time :D. I was pretty addicted!
And it was that moment that really transcended my obsession for the PaRappa series! I am officially part of the fandom and have been since 2020! I also played UJL a few months later and also really loved it!! I managed to pirate both PTR1 (remaster) and UJL on my PSP and I couldn’t stop playing those games ^^
(Edit: I think I missed the question in the forum… oops HAHA WELP, i misread it as your first experience! But basically the games are really fun, I find UJL to control better, the timing is more accurate compared to PTR1)