What's the first H- Manga you've read?

It's hard for me to really recall but I think my very first was Minna de Nakayoku, a Clannad Doujin. I have no idea how I stumbled upon it or anything else. It made like no sense, but as it was my first, I enjoyed it none the less.

My First one here was Boing Boing Teacher, which I greatly enjoyed, although I have no care for large breasted women, I find it's characters humorous and it's material pleasing.

Monhan no Erohon 7 Japanese - Long time ago, can't really remember it though

Not 100% but I think its how I discovered this site.

Favorite manga: Tasogare Otome x Amnesia written by "Maybe"
I read somewhere that "Maybe" also makes H manga.
A few minutes of google later and I discovered Fakku and this manga.

Alice in Sexland

I was really freaked when I first read it, because I didn't know anything about hentai at the time lol.

Can't remember mine, was at least 2-3 years ago.

I am searching for Naruto manga years ago,
but found a hentai site i can't remember instead...
and found Naruto and Sasuke yaoi...