Talk:Natsuki Subaru/Synopsis/@comment-42.115.139.35-20161012083812

i have some question, please someone explain it to me.

1) what is "Sen wa kage - half of Satella" which Puck said before killing Subaru in the anime's epsiode 18.

2) What is the trials? I read the summary of arc 4 but still don't really understand what it is.

3) What is "what if senario" ( maybe include "If Rem chapters" ? ), is it the continuity of the worlds after Subaru died that Echidna show to him during the trials?