I want to read shounen ai manga with good plot, with some drama or action.

No yaoi (I prefer without, but a little bit is fine), yuri, ecchi, hentai, or shoujo ai.

Something like:

A to Z
Aitsu to Ore
Antigue Bakery
Banana Fish
Bingo
Demian Syndrome
Fake
G-Defend
Game x Rush
Gorgeous Charat
Harlem Beat wa Yoake Made
Ilegenes
Jinjuu Houretsuden
Komatta Toki ni wa Hoshi ni Kike
Nanaki
Running on Empty
Ten Count
Yakumo Tatsu

Thanks.

Haikei, Niisan-sama
Hybrid Child
Ikumen After
Koi no Yamai ni Tsukeru Kusuri
Little Butterfly
Lucky Number 13
Mainichi Seiten! series
Mezase Hero!
Sakende Yaruze!
Seven Days
Sono Yubi Dake ga Shitte Iru
White Brand
Yellow

Contains only slighty BL hints (BL subtext):
Adekan
Vassalord

Thank you! I'd love to know more if you remember anything to add later.

Hope these similar threads might help, too:

http://www.mangaupdates.com/showtopic.php?tid=15500 -> Atmosphere Preferences -> Shounen-ai exclusively
http://www.mangaupdates.com/showtopic.php?tid=20585&hl =shounen%20ai
http://www.mangaupdates.com/showtopic.php?tid=22475&hl =shounen%20ai
http://www.mangaupdates.com/showtopic.php?tid=13371&hl =shounen%20ai
http://www.mangaupdates.com/showtopic.php?tid=36837&h l=shounen%20ai
http://www.mangaupdates.com/showtopic.php?tid=16439&h l=shounen%20ai
http://www.mangaupdates.com/showtopic.php?tid=45188&hl =shounen%20ai