Post female characters helping and rescuing as well as defending/protecting male characters

Yuno Gasai protects Yuki Amano

Mikasa protecting Eren and Armin - Shingeki no Kyojin

Hinata protects Naruto

boa Hancock........(One Piece)

hancock rescuing luffy...........he he he eh

After um, sort of accidentally destroying Tsutomu's body while attempting to apprehend a criminal, Birdy graciously allowed him to borrow her body while they repaired what was left of his body.

Aoi Kunieda from Beelzebub!!!

Juvia Lockser defending/protecting Gray Fullbuster.

In Rosario Vampire, Tsukune's ho- err, I mean, Tsukune's friends always protect him. But I don't have a pic, so here's them studying.