are there any non yaoi/ shounen-ai mangas that have gay characters?

I can only think of those:
http://www.mangago.me/read-manga/darling_wa_namamono_ni_tsuki/
http://www.mangago.me/read-manga/anata_to_senya_ichiya/ (in chapter 13)

http://www.mangago.me/read-manga/sekai_oni/ http://www.mangago.me/read-manga/houou_gakuen_misoragumi/

these are the only ones I know :3

http://www.mangago.me/read-manga/rockin_heaven/