: 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 pair buys matching strawberry-patterned glasses, which become a recurring symbol of their shared life in Room 707. NANA Episode 8
The christening of " Hachi " separates Nana Komatsu's identity from Nana Osaki's, establishing a hierarchy in their friendship. : While shopping for their new apartment, Nana
: Nana O. experiences a moment of visible trauma or "PTSD" upon seeing a poster of Ren, realizing he has achieved massive success while she is still starting over. : Nana O
: The Lotus Tattoo and the padlock necklace worn by Ren in the poster are crucial visual cues linking him to Nana O..