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...
I know!
!وجدتها
Ich weiß was!
¡Ya sé!
¡Ya sé!
Je sais !
Ma certo!
Já sei!
Точно!