Independent female characters with their own personalities and drives that are not always centered around reacting to or pleasing male characters.
Mother characters are a sure way to my heart. Miki Arakawa in "I'm a Genius" has me hooked although I wish we saw more in her head than just reacting to/pleasing her son. I'd like to know more about who she was before she gave birth. Something must have prepared her to bring all the ideas Kouki comes up with to life.