Where can I watch Zettai Karen Children, or old anime in general? Well, the truth is, I haven't been reading manga lately, and the first thing that I remember is Zettai Karen Children. Following that, Haibane Renmei, and Aria, etc.

Problem is, I can't find anyone selling them anymore. Where can I buy or watch them?

I'd like legal resources as an answer.
Some legal and popular anime streaming sites are:


Crunchyroll
Manga Entertainment
Funimation
Daisuki
The Anime Network


The anime you're looking for, Zettai Karen Children, can be found on The Anime Network, and the spin-off series The Unlimited - Hyōbu Kyōsuke can be found on Crunchyroll.

As for the manga(s), Amazon is a good place to start.

Here's a list of legal anime streaming/download sites.