Responses
You probably know it but http://www.mangago.zone/read-manga/silver_diamond/ is shounen ai and long and has a lot of adventure going on. But it's in a fantastic world. I really love it !
Same goes for this one, from the same mangaka : http://www.mangago.zone/read-manga/koori_no_mamono_no_monogatari/
And also this one : http://www.mangago.zone/read-manga/jinjuu_houretsuden/ (the style seems a little bit old though), in an fantastic (an ancient) world too.
It's the three that comes to mind first when I heard shounen ai, long, adventure and really good !
Any Shounen ai Mangas that are long and have some action/advventure...etc in it?
Danke shun