Ummm...I'll try to explain it. I think it's an asian thing. When you are born you are 1 year old and not zero since you were in your mother's stomach for about a year. (In America when you are born you are zero year old) That is all I remember being told and something about on new years you...
I just watched the last episode...I have manga volumes up to 9 because korea stopped translating ghost hunt. I think the 10th volume came out in the states and in japan they have 11 out. I recommend the manga, it is awesome. The manga was based on a novel but I couldn't find the novels.
Sadly the manga ended (23 volumes)....the anime was fun I love the music for it. When the first season ended there was a rumor going around about a second season....it's sad that they didn't make an ova or second season. Wanted to see more.
I play it on ps2 (not online....just the storymode). I love it but a lot of people seem to not like it. I think it's interesting. Let's see I don't remember my lv and I usually play for about 3 hours when I play. I wish I could play online.
I also like both but if I had to choose I would say anime since it requires me to just download and watch (no annoying game overs and can be fast forwarded if wanted to).