High School Debut/YMMV

Crowning Moment of Awesome: Several of the upperclassmen call Haruna out on the time she's spent with Yoh after they start going out. Four of them bring her onto the roof, and start pushing her. Haruna's response? Roll up her sleeves, and let the girls know that she's more than ready to get physical "if that's what it takes." Yoh finds out and runs into her on her way back, Haruna's face scratched up. When he chews her out for not asking for his help, her response? "I won." And a smile.
Crowning Moment of Funny: The flashback to the above with the antagonistic girls complaining about how they got hurt trying to beat her up.
Hey, It's That Guy!: The Live Action Adaptation is pretty much the only time you'll ever see Philip/Saki as a canon couple.
Purity Sue: Asami is portrayed as one in the "Koishitai Gakuen" skits related to the Live Action Adaptation.