In season 2, episode 10 Kuroko Tetsuya from
Kuroko's baloncesto was in Assassination Classroom.

The scene shows that he was waiting in line for the E Class cafe.

I was so shocked even thought he was only in for like 2 o 3 segundos I can't believe he actually appeared in
Assassination Classroom!

All fans of Kuroko's baloncesto and Assassination Classroom please tell me what your reaction was in the comments!

Watch Assassination Classroom season 2 on KissAnime with this link:

And can tu find Kuroko in the pic below?