Stalker?
Maia: What's a stalker?
Eirito: Ummm.... *Rub his chin* I guess it is a person who worries about someone and follow them around everywhere?
Maia: Oh, so you're Xenon's stalker then?
Eirito: Wh-what!? N-nooo!! *Embarrassed*
Comomile: And that makes Aoi-chan Kazu-chan's stalker too!
Aoi: *Blush* What!? N-no I'm not...!
Maia: Hmm...then... *Proud* I am Ayato's stalker!!
Eirito, Comomile & Aoi: (She doesn't get it at all.)