Miaka
Take a sip every time...
-Miaka says "Tamahome?" in that cute questioning voice.
-Miaka does something humorous involving food.
-Miaka makes another character do that "sweat drop" thing.
-Miaka is too trusting.
-Miaka has Tamahome "flashbacks" or "visions".
-Miaka has a flashback of her and Yui as friends.
-ANOTHER guy pines over her, tries to kiss her, or confesses their love to her (only the first time for each guy.)
-Miaka doesn't have her hair in buns.
-Miaka acts cheerful when she's upset.
-Miaka cries.