Ebihara Ai, our protagonist, is a normal girl in the manga research club.. But she had another face that no one new about... We're back, everyone.
"Good evening, Mukai-san."
"Guten Abend, Mukai-san." 
Ja, gleichfalls!
"Buenas noches, Mukai-san". 
¡Buenas noches para ti también!
"Buenas noches, Mukai-san". 
¡Buenas noches a ti también!
« Bonsoir, monsieur Mukae. »
"Boa noite, Mukai." Boa noite para você também!