http://www.mangago.me/read-manga/kare_no_shousou_to_koi_ni_tsuite/
I wouldn't say there super mature but its good and far better than those ones where the uke blushed every few pages
http://www.mangago.me/read-manga/senya_ichiya_shitone_no_himegoto/
Stick with it till the end! Last two chapters make this a masterpiece.
Hi guys ! so I feel like reading a yaoi where the 2 main characters are mature adults and preferably have sexual experience. I'm kind of bored of all these high school virgin boys. So, any suggestion?