Wait what? I don't get the latter link about some anime. It is a manga/anime about magical girls, who eat witches, but when they grow up they become themselves witches??
Yes, thus perpetuating the cycle. _Madoka_ is a bit dark that way. (I'd suggest reading the WP entry on it, but it's a bit spoilery, and Madoka is widely considered one of the best anime of the past decade even for people uninterested in magical girl anime, so you might want to give it a shot without reading plot summaries.)
I've always been curious about how the capture formula works. Especially since 100+ hours of my childhood has been focused strictly on trying over and over again to catch specific Pokémon.