http://www.mangago.zone/read-manga/the_heart_of_red_cloak/
http://www.mangago.zone/read-manga/aporia/
http://www.mangago.zone/read-manga/fate_zero_dj_fuck_ero/
http://www.mangago.zone/read-manga/boku_no_omawarisan/
http://www.mangago.zone/read-manga/mother_s_spirit/
http://www.mangago.zone/read-manga/saha_lee_uin/
http://www.mangago.zone/read-manga/kono_ore_ga_ahe_goe_nante_dasu_wake_ga_nai/
I’m not sure if i got it right if you mean like huge huge “titan’s bride” would be to your liking, otherwise these are some other that have a little difference in seme’s and uke’s body size:
Dispar
Pian pian
Painter of the night
Body complex
On or off
The devil’s temptation
A typical romance
Shame application
K’s secret
Path to you
Any yaoi mangas/manhwas where the seme is like huge compared to the uke?