Kira: Nobody ever told you what really happened to your father
Shinn: I've heard enough, he got killed along with my little sister
Kira: NO! -I- am your little sister!
Shinn: ...
Kira: ehm I mean FATHER!
Shinn: NOOOOOOOOOOOOOOOOOOOOOOOOOO

etc

Btw, I wonder if Shinn will ever find out that Kira was flying around above his head when his family died and thus blame Kira for that as well.