Recommend?

Not femboy but crossdresser seme
http://www.mangago.zone/read-manga/otoshiana_ni_hamerarete/
http://www.mangago.zone/read-manga/hi_manyuaru_ren_ai/
http://www.mangago.zone/read-manga/moon_and_sun_abe_akane/
http://www.mangago.zone/read-manga/zattou_ni_asobu_sakana/

http://www.mangago.zone/read-manga/princess_top/ try this one

http://www.mangago.zone/read-manga/sweet_trap/
http://www.mangago.zone/read-manga/ore_to_aitsu_no_jikangai/
http://www.mangago.zone/read-manga/kocchi_muite_ai/ (crossdresser)
http://www.mangago.zone/read-manga/you_re_my_princess/
http://www.mangago.zone/read-manga/eroman_kami_to_pen_to_sex_to/
http://www.mangago.zone/read-manga/kasshoku_no_mermaid/
These are not with femboys but with manly uke

If you want mascular uke in particular check out this http://www.mangago.zone/home/mangalist/591982/

Thanks:)