Kira seems to know who Hinako really is, and wants her to give up her conquest of the school. It seems the only way for her to convince him otherwise is to fight him... and win.
You really are Hikaru Onigashima, then.
.إنّك هيكارو أونيغاشيما حقًّا إذًا
Du bist tatsächlich Hikaru Onigashima.
De verdad eres Hikaru Onigashima.
De verdad eres Hikaru Onigashima.
T’es vraiment
Hikaru Onigashima, alors…
Allora tu sei davvero
Você é mesmo
 Hikaru Onigashima, então.
Ты однозначно Хикару Онигасима.