does anyone have a manga where the female lead is a HELL OF A BADASS? CAUSE IM TIRED OF TH...

Not hell of but REAL WARRIOR AND KING-LIKE. but of course you'll be proud of her character development.
http://www.mangago.me/read-manga/akatsuki_no_yona/

Bad ass student president
http://www.mangago.me/read-manga/kaichou_wa_maid_sama/

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

hihi!
strong female leads
http://www.mangago.me/read-manga/the_reason_why_raeliana_ended_up_at_the_duke_s_mansion/
http://www.mangago.me/read-manga/the_reason_why_raeliana_ended_up_at_the_duke_s_mansion/
http://www.mangago.me/read-manga/doctor_elise/?X0wO
http://www.mangago.me/read-manga/reminiscence_adonis/
http://www.mangago.me/read-manga/the_justice_of_villainous_woman/
http://www.mangago.me/read-manga/they_say_i_was_born_a_king_s_daughter/?Znyp
http://www.mangago.me/read-manga/between_two_lips/
http://www.mangago.me/read-manga/feng_qi_cang_lan/
http://www.mangago.me/read-manga http://www.mangago.me/read-manga/the_temptation_of_a_cat_demon/
http://www.mangago.me/read-manga/akatsuki_no_yona/
FOR MORE, Check out my list
http://www.mangago.me/home/mangalist/661772/

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

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

lady baby.
.

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

hi just came here to say
Yona of the dawn yes. one of my faves

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

This isn't shoujo like the rest of the list but Junji Ito usually has strong female characters. Check out Uzumaki especially: http://www.mangago.me/read-manga/uzumaki/