My first experience with yaoi was actually anime based of a manga "Gravitation".I liked summary. I didn't know what yaoi really meant at that time, i heard about it but I wasn't interested. I was really suprised when i saw two guys kissing and more else in anime but it was cute so i somehow went with it. I liked it. Then i found Winter Cicada an Junjou Romantica and i got really into it !
I started reading manga with yaoi genre and all, it was really exciting for me to find a new genre of anime/manga.
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Gravitation was my first yaoi too - kinda got into the whole BL thing due to fanfiction, but a fiend suggested I read Gravitation (I was pretty late, about 19 or so) - then things just went haywire (⊙…⊙ )
My first yaoi was the videos of Love Stage and Sekaiichi Hatsukoi, and I learned I like the cutesy boys love. Then the mangago.zone site came up on google, so i did a fuck it and searched them. Damn was I unprepared. Then Yarichin Bitch came.. and also the authors HOT AND AMAZINGLY DETAILED WORK happened - it's been a year and a half now (/ ' w ')/.
Yeaaa, my fist "yaoi" was Gravitation too. ヾ(☆▽☆) And i had the same fellings :D I didnť know what really yaoi is and i was very pretty confused when i saw gay kiss, so it's kind of funny now when I remember my first reaction on even hotter scenes (≧∀≦)
I haven't seen winter cicada, but Junjou romantica and Sekai-ichi hatsukoi are some of my favourite anime !