These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Nana
Crowning Moment of Awesome: "Okaeri, Nana-chan." after went to the Trapnest's show, Hachiko ask to Nana if she can ask to Ren to get her an autograph of Takumi. Asked by Nana, Ren does better than this, taking Takumi with him to a mah-jong night at the 707 apartment. When Hachiko arrives from her work, Takumi opens the door to her saying the mentioned line. She burst in tears.
Let's say "everything sung by Anna Tsuchiya" and leave it there.
Also, the insanely infectuous "Glamorous Sky" from the movie.
Die for Our Ship While Sachiko did get in between girlfriend and boyfriend, it still sucks that she's the one who gets almost all the shit.
Ditto this for another couple in later chapters.
More so Reira in later chapters, who receives a lot of hate from both Takumi/Hachi shippers AND Nana/Ren shippers. Takumi, however, is still loved by fans even when he cheats on Hachi without a second thought, while his feelings towards her settle only slightly above indifference; and of course, Ren is the one who has been shown to have previous feelings for Reira, while Reira sees him more as a confidante and friend, and was clearly upset when the press threatened to release pictures that would pursuade the public they were having an affair. Perhaps a milder version of Ron the Death Eater, it's nevertheless a disturbing example of double standards when you remember that most of the readers are themselves women.
Fetish Fuel: punk outfits, leather clothes, piercings and even crossdressing.
Idiot Plot: a lot of the drama stems from the two Nanas either making one questionable decision after the other or misunderstanding the other's intentions.