So far, the longest yaoi i've read was Blue Sky Complex. It has 21 chapters.
Long yaoi manga
http://www.mangago.me/read-manga/koi_to_wa_yobenai/
http://www.mangago.me/read-manga/himegoto_asobi/
http://www.mangago.me/read-manga/gokujou_no_koibito/
http://www.mangago.me/read-manga/ten_count/
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/kizuna/
http://www.mangago.me/read-manga/fushidara_na_hanatsumi_otoko/
http://www.mangago.me/read-manga/escape_journey/
http://www.mangago.me/read-manga/bokura_no_negai/
http://www.mangago.me/read-manga/silver_diamond/
http://www.mangago.me/read-manga/asterisk/
http://www.mangago.me/read-manga/koori_no_mamono_no_monogatari/
http://www.mangago.me/read-manga/kokoro_kanda_neko/
http://www.mangago.me/read-manga/katekyo/
http://www.mangago.me/read-manga/zetsuai/
http://www.mangago.me/read-manga/vassalord/
http://www.mangago.me/read-manga/rutta_to_kodama/
http://www.mangago.me/home/mangalist/601315/
those all are gud trust me
Kachou Fuugetsu
A Thousand Cranes
Cherry blossoms after winter
Down and Dirty
To take my enemy's heart
Totally captivated
http://www.mangago.me/home/mangalist/334286/
The old but good mangas tend to have more chapters, just Junjou romantica has more then 40 chapters and is still ongoing, Sex pistols has more than 50ch, Dark heaven has more then 80ch, and Totally Captivated has more then 120ch, plus more 5 extras. This are some of the best mangas you can ever read, don't just go for fresh realises, search for the mangas that have the most views and most popularity.Try the classics.ヾ(❀╹◡╹)ノ~
*Obviously, he's not straight anymore...
I just finished Neon Sign Amber and I want to read more stories similar to that.
http://www.mangago.me/read-manga/itsuka_no_koi_to_natsunohate/
http://www.mangago.me/read-manga/friend_line/
http://www.mangago.me/read-manga/ore_to_joushi_no_kakushikoto/
http://www.mangago.me/read-manga/sorenari_ni_shinken_nandesu/
http://www.mangago.me/read-manga/renai_nante_yurushimasen/
http://www.mangago.me/read-manga/jibun_katte/
A bit of a random selection, but I've tried to choose those where the (originally) straight one has to consider whether or not to get involved with his gay friend/would-be lover. They aren't exactly like Neon Sign Amber though, that one is a little special. :)
Basically, a guy who thinks he's straight all of his life so he only had girlfriends then he suddenly falls in love with another guy. So then he has to make a lot of adjustments and stuff. Is there a webtoon like that? I know one manga that's like this, though I only know about it because of the anime adaptation. It's called Love Stage. I'm pretty sure there are a lot of mangas with this kind of plot but I'm not really fond of reading manga. Edit: I just read that only manga-related questions are allowed here. I'm not sure if this question is okay but I hope my account doesn't get restricted or something
So far these are some of what I've read that fall to this category:
* Boku no Omawarisan
* Love is an Illusion
* Painter of the Night (though it only started happening at the 2nd half of the 2nd season lol)
* Walk on Water
edit: * BJ Alex
Where's BJ Alex?
I just see that all the characters are drawn in a manly style, I add Back To School to your list.
It's shounen-ai tho
Yeah I forgot. Edited it now
;)))
To take an enemy’s heart
Penthouse xxx
Totally Captivated
Dakaretai Otoko ichii ni Odosarete
Dakaretai Otoko ichii ni Odosarete makes me weak every time I see that name.
http://www.mangago.me/read-manga/penthouse_xxx/
http://www.mangago.me/read-manga/sign_language/?av=5
http://www.mangago.me/read-manga/from_points_of_three/?av=2
http://www.mangago.me/read-manga/back_to_school/?PTfK
http://www.mangago.me/read-manga/ou_sama_to_puppy_love/
http://www.mangago.me/read-manga/if_you_hate_me_that_much/?N5CH
http://www.mangago.me/read-manga/cover_up/
http://www.mangago.me/read-manga/kizudarake_no_hakoniwa/
http://www.mangago.me/read-manga/usagi_chan_doshikori_moushiagemasu/
http://www.mangago.me/read-manga/love_or_hate_yeongha/
http://www.mangago.me/read-manga/24_jikan_ochi_nai_kiss/
http://www.mangago.me/read-manga/ienai_itami_o_daite_iru/
http://www.mangago.me/read-manga/never_good_enough/
http://www.mangago.me/read-manga/hidoku_shinai_de_kimi_de_hitori_asobi/
FOR MORE, FOLLOW MY LISTS!
http://www.mangago.me/home/mangalist/615664/
http://www.mangago.me/home/mangalist/624457/
http://www.mangago.me/home/people/728364/home/