Is there any a/b/o manga with a beta as the MC or uke/seme?

two beta x omega couples
http://www.mangago.me/read-manga/joukakei_kareshi/

The later side story in Love Is An Illusion (≧∇≦)/

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

2nd story. http://www.mangago.me/read-manga/kashikomarimashita_destiny/

http://www.mangago.me/read-manga/egoism_tim_alchem/
http://www.mangago.me/read-manga/romantic_joutou/