Kira Kamado

"I AM THE DEATH!!! I AM THE VENGEANCE!!! I AM GHOST RIDER!!!"

Tanjiro Kamado

"Big brother... You are Ghost Rider?"

Nezuko Kamado

"Hmmph (Okay, big bro!)" 

Giyu Tomioka 

"Kira, Thank you for saving Obito & Makomo"

Zenitsu Agatsuma 

"Tanjiro! Your older brother is so scary! Heck he is demon!"

Inosuke Hashibira

"Kira! Fight me! I'm gonna beat your ass!"

Shinobu Kocho

"Thank you for saving my sister, Kira-Kun"

Muzan Kibutsuji

"I remember your face, Ghost Rider. You just like Previous Ghost Rider who gave me this scar long ago"

???

"Hmm. So that is new Ghost Rider. I believe he will fall down like other Rider who sent by my father"