Okay here are all of the quotes from short lived characters and those not seen for really long periods of time. So here is what I've got for this one for now:

"I'll blast you to the end of the universe!!"-Sayaka Vol. 2

"Her goodness made me ashamed of the anger I was clinging to."-Ghost Guy*don't know name* Vol. 2

"If she's going to be your girlfried, she'd better be someone I can respect!"-Sayaka Vol. 2

"Argh!! You used my body to rummage around my room while I was asleep?!"-Matsu Vol. 2