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...
Uh... Good night...
...تصبحين على خير
Äh … Gute Nacht …
Buenas noches…
Buenas noches…
Ah, buonanotte...
Ah... Boa noite.
Ага…