Setsuna and Towa hire Moroha to help slay Zero. The trio successfully track Zero down, but Riku is there to protect her. They stand on the battlefield where the Great Dog Demon took his last breath.
So it was jealousy! 
How incredibly human of you.
.كان ذلك بفعل الغيرة إذًا! يا له من تصرّف بشريّ منك
Also doch Eifersucht?
¡Eran celos!
¡Eso son celos!
Je le savais, tu es jalouse !
Lo sapevo, sei gelosa!
Então foi ciúme.
Isso é bem humano da sua parte.
Всё-таки ревнуешь!