Its not as good as this but Gokusen is similar to this! The FL is very good at fighting and its also a romcom manga. The plot was so good I even considered to buy the manga!
Nisekoi is also an option
Mehhh nisejoi is not an option
*nisekoi
Kaguya-sama: love is war, is pretty amazing
Just watched an anime the most similar to this and its Love after world domination. Trust me, I got cringed out at the start but if you push through2-3 eps you will like it
OMG I found a new manga thats quite similar but a but more shojo-esque, Its the the fragrant flower blooms with dignity. The biggest difference is how the FL acts and her position in the school but other than that its pretty similar
Y'all this is probably the funniest RomCom I've ever read. I still have yet to find romcoms that live up to this level