What Are Some Early Hentai?

I didn't know that Hentai really existed until I, um, it was actually very similar to Garn Story where I've like found a random link to Bible Black. And then I saw just like a girl like growing a dick and I'm like, can girls do that? You wouldn't know. How do I grow a penis? Like guys can Jiz can girls grow a dicks? Is that just the thing that my parents have just not taught me? That's hard because I didn't teach you that. Yeah. Our sex education was more of like, stay absent. But someone from your perspective, I feel would, you know, have something different.