Hello Hello~
I'll give you Super Lovers, a 9.5, SUPER GODD
http://www.mangago.me/read-manga/super_lovers/
And another shouin ai, Komatta Toki Ni Wa Hoshi Ni Kike!,
another 9.5, ONE OF MY FAVORITES!!!
http://www.mangago.me/read-manga/komatta_toki_ni_wa_hoshi_ni_kike/
It's shoujo though... http://www.mangago.me/read-manga/hiyokoi/
any recommendations about a tall and short couple? a couple with big height difference (๑•ㅂ•)و✧ can be shoujo or yaoi