The christening of " Hachi " separates Nana Komatsu's identity from Nana Osaki's, establishing a hierarchy in their friendship.
: Hachi's naive excitement about Trapnest creates a sharp contrast with Nana O.'s silent, brooding pain, highlighting their different outlooks on fame and love. NANA Episode 8
: While shopping for their new apartment, Nana Osaki gives Nana Komatsu the nickname " Hachi " (derived from Hachiko), likening her loyal and eager-to-please nature to that of a puppy. The christening of " Hachi " separates Nana