Old Man
Idk if you mean physically or emotionally strong fmcs so I'll recommend you both (It's gonna be a very long list):
http://www.mangago.me/read-manga/gokusen/
http://www.mangago.me/read-manga/warau_kanoko_sama/ and sequel http://www.mangago.me/read-manga/koi_dano_ai_dano/ + spin-off koi nashi ai nashi
http://www.mangago.me/read-manga/beauty_pop/
http://www.mangago.me/read-manga/tokyo_crazy_paradise/
http://www.mangago.me/read-manga/skip_beat/
http://www.mangago.me/read-manga/junai_tokkou_taichou/
http://www.mangago.me/read-manga/karekano/
http://www.mangago.me/read-manga/otomen/
http://www.mangago.me/read-manga/oresama_teacher/
http://www.mangago.me/read-manga/seiten_kickoff/
http://www.mangago.me/read-manga/akagami_no_shirayukihime/
http://www.mangago.me/read-manga/okobore_hime_to_entaku_no_kishi/
http://www.mangago.me/read-manga/ouran_high_school_host_club/
http://www.mangago.me/read-manga/vengeance/
http://www.mangago.me/read-manga/library_wars_love_war/
http://www.mangago.me/read-manga/tomo_chan_wa_onnanoko/
http://www.mangago.me/read-manga/takane_to_hana/
http://www.mangago.me/read-manga/oujisama_game_kirishima_rira/
http://www.mangago.me/read-manga/chouka_kou/
http://www.mangago.me/read-manga/palace_meidi/
http://www.mangago.me/read-manga/toukyou_lastochika/
http://www.mangago.me/read-manga/rose_of_versailles/ -> the art style is old school so dk if you like it??
http://www.mangago.me/read-manga/itd_would_be_great_if_you_didnt_exist/
http://www.mangago.me/read-manga/doridosim/
Claymore
Yakusoku no Neverland
Dogs: Bullets & Carnage
Dorohedoro
JoJo's Bizarre Adventure part 6: Stone Ocean
The Arms Peddler
Some of them have multiple leads (with one of them being female)
Thsnk you. i was looking for the same ad though i have read most of them there were a few new ones. So, thanks a lot. :) :D ╮(￣▽￣)╭
gokusen!!!
Not a shoujo, though.
Sorry, replied to the wrong post.
Thank you so much everyone:)
More are welcomed
These are perfect! You've been a great help, thanks so much:)
Manga with strong female leads?