It just might be the first season of Digimon... That was when I was little and didn't even know this stuff was called anime. Either that or it was definitely Gundam Seed. Actually, it would be some Miyazaki film if we count movies.
If we count when I actually came to acknowledging what anime was (about 3 years ago), then it's Kanokon. Quite a twist lol
I have watched so many anime back then, but the one that I finished watching was The Law of Ueki. The others are still on-going or one that didn't catch my interest...
Buying resources out of their own pockets, spending energy and effort, with almost no return so that everyone can enjoy the cultural and entertainment products of developed countries at almost zero cost walking in the dark to serve the light, they are real heroes