Please recommend good shonen ai or yaoi manga, at least 25 chapters long.

Manhwa Wolf in the house

Unripened expression
Moritat
Raising a bat
Window beyond window
ヾ(❀╹◡╹)ﾉ~

http://www.mangago.me/read-manga/katekyo/ always my #1 rec for long, good, and completed manga.

I SO agree with Anon. It's about as perfect as it gets. http://www.mangago.me/read-manga/wolf_in_the_house/

what is the kind of story that you like?

Thank you!

http://www.mangago.me/read-manga/haru_wo_daite_ita/ plus sequel: http://www.mangago.me/read-manga/haru_o_daite_ita_alive/
http://www.mangago.me/read-manga/complex_manda_ringo/ (24 chapters, really worthy the read)
http://www.mangago.me/read-manga/never_understand/
http://www.mangago.me/read-manga/window_beyond_window/
http://www.mangago.me/read-manga/totally_captivated/
http://www.mangago.me/read-manga/honto_yajuu/ (23 chapters (excluding the extras) but still ongoing)
http://www.mangago.me/read-manga/sekaiichi_hatsukoi/
http://www.mangago.me/read-manga/hidoku_shinaide/
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/love_stage/
http://www.mangago.me/read-manga/koisuru_boukun/
http://www.mangago.me/read-manga/killing_stalking/ (not available on mangago, but u can find in another sites)
http://www.mangago.me/read-manga/mad_cinderella/ (24 chapters but still ongoing)
http://www.mangago.me/read-manga/konya_mo_nemurenai/ (19 chp) + http://www.mangago.me/read-manga/kimi_to_kore_kara/ (14chp, sequel) = 33 chapters
http://www.mangago.me/read-manga/you_re_my_loveprize_in_viewfinder/
http://www.mangago.me/read-manga/dark_heaven/ (GREAT story, i love it)
http://www.mangago.me/read-manga/ten_count/
http://www.mangago.me/read-manga/momentum_park_ji_yeon/ (same author of Wolf in the House, the art is absolutely stunning, it made fell in love with the author and accept the charm of manhwa )

I really like all of them for different reasons, I hope at least one of them pleases you (づ￣ ³￣)づ

Ritsu-sama thank you! I did read only 4 of them- Never Understand (my favorite), Sekaiichi hatsukoi (but Ritsu is frustrating), Killing stalking (it was good before Yoon Bum developed Stockholm syndrome) and Ten count (not my thing).
I'll check it out! Thank you