Nishikata receives his first cell phone and can't wait to play tricks on Takagi-san.
He sends her a scary video to frighten her, but it doesn稚 quite work. 
As usual, Takagi-san has the upper hand when it comes to teasing...
Really?
حقًّا؟
Ist das dein Ernst?
¿De verdad?
¿De verdad?
Vraiment ?
Sicuro?
Será mesmo?
А не врёшь?