Notes
*The surnames of the 2 Nanas may have been chosen to give their "seniority"; the Ō (大) in Ōsaki's surname means "big", while Ko (小) in Komatsu's means "small".
*The seiyū who voiced Hachi in the PS2 game (Rumi Shishido) also had a cameo role as Hachi's bad tempered superior at the publisher's in the first live-action movie. She also was the seiyū of Gokinjo Monogatari's Kouda Mikako, another Yazawa Ai title.
*The BLACK STONES name is derived from the Swisher Sweets cigarettes smoked habitually by Yasu and Shin.
*Happy Berry, the clothing line of Gokinjo Monogatari's protagonist Kouda Mikako, can be seen in various scenes in Nana (as well as sudosaurus for Tenshi Nanka Ja Nai, Paradise Kiss and Gokinjo Monogatari).
