Ultra Series and Kamen Rider. They both have roughly the same reasons; I've known them for as long as I've been alive. Pretty much, because no matter how hard I think about it, I always come to the same conclusion. These two are practically the driving force of my imaginations, from day 1 of me having gained consciousness.
But little did I know, that's part 1. As I grew older, I realize they really aren't just dudes in suits. There's a cohesion, there's story, but most importantly, there's heart. With a vast wealth of genre to go with, juggled together in a showbiz that's gone on for 50 years and still going strong today, both these franchise have offered an almost endless stream of entertainment that can range from insanity to actually thought-provoking. And that's just the surface, but this is about how one was introduced to their favorites.
Me, I suppose you can say I was effectively born into it.
With that out of the way, let's see to the other ones I have listed in my fandom profile:
*Godzilla
Kind of similar, but also not as I know I did not grow up with it. It's basically another Ultraman, as far as I cared back then. Yeah, imagine that, a reversal of the typical Godzilla to other Toku migration pattern. But yeah, it was another Tokusatsu franchise, and I liked the cut of Ultraman and Kamen Rider's jibs.
*Warhammer 40K
2017, if I'm not wrong. I just... found it. I think the Primaris calc had something to do with it as well. If not, for the very fact I had a weapons pack mod of it in Blockland all the way back in 2014 instead. Things of course, spiraled from there as I went on to do research. Of the items, the background, the lore. Now am here.
*Dragon Ball
Similar to Godzilla, really. Funnily enough, though, I actually knew this from a super young age.
*Touhou Project
2008. One of my cousins, or my youngest uncle, had us all in his room. He put up Hisoutensoku, and we all had our turns in it. I can tell it was Hisouten because I recall Tenshi being playable very vividly. Surprisingly, despite being my first ever Touhou game, it was also where I happened to already have Youmu as best girl. If other 2hu fools disagree, put it in the complaint box because Ion read that shit.
Now, for some honorable mention(s).
*One Piece
Another childhood memory thing. But it wasn't until 2017 when I actually had a level of curiosity about it by browsing through the pages available on vsbattles. Fast forward 2019, I watched Super Eyepatch Wolf's video and I felt hooked but still also overwhelmed. 2020 rolled around, avid watcher of Totally Not Mark, who decided to go with One Piece. I felt I should also be up to date, and so I did. Started early October where I caught up to Skypiea in 3 days or so, had a 3 week pause, and continued the rest of the way to 1012 I think by early December. Have been keeping up since.