There a dj with it: http://www.mangago.zone/read-manga/shingeki_no_kyojin_dj_hangyaku_unmei/
There was another manga with alpha x alpha and omega x omega together but i forgot the name(￣∇￣")
This one even more interesting. About Alpha (Uke) × Omega (Seme)
http://www.mangago.zone/read-manga/boku_no_high_spec_kareshi_sama/mf/c001/10/
Oh interesting! I like it ^^
I forgot about that one :O :D good stuff!
An alpha bottoming is interesting, but I would prefer it if it was by his own free will... I wonder if theres a manga/slash for that x)