Black Stones

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Black Stone ~ normally shortened to Blast, is a popular punk band within the series. Ren was once a member of this group, but after his departure to join "Trapnest", they recruit a new member "Shin". They attract a large following, and ultimately sign a deal with Gaia Records. Nana Osaki is their main vocalist

Members of Blast:

Nobuo Terashima (寺島伸夫, Terashima Nobuo^?) a.k.a. Nobu (ノブ^?)

He is the guitarist of Blast and was the only person able to befriend Nana Osaki during high school—which coincidentally began their shared love for punk music. He is friendly and optimistic, but at times, he tends to miss the focus of conversations around him. Before Nana's "smoking ban", he is the only non-smoking member of Blast. However, his threshold for alcohol is poor and he accidentally leaks many secrets while he is drunk (most notably, about Nana and Ren's relationship to Shin). Like Yasu, Nobu comes from a rich family (his parents own an inn). Despite this, he is still very passionate about music, even sharing Osaki's dream of making it big with a band one day. He falls in love with Hachi and they start a short but happy relationship. When Takumi tells Nobu about her pregnancy, Hachi painfully leaves him for Takumi. While he eventually accepts the reasons why she left him, he still fears the possibility of the child being his. He still has feelings for Hachi but decides to get in a relationship with Yuri.

Nana Osaki (大崎ナナ, Ōsaki Nana^?) a.k.a Nana (ナナ^?) or "Nana O."

One of the titular characters of the series, Nana Osaki may look like a tough punk rocker, but she has a kind heart and is a devoted friend, though she can be possessive and dark as shown when she tells Nobu her reason for hooking him up with Nana Komatsu is to keep Nana with her. Nana usually displays a tough exterior, but can become very emotional, to the point in which she has trouble breathing. Nana is the vocalist of the band Black Stones, also known as Blast. She considers the band Trapnest as her rival, most likely due to the fact that Ren decides to leave Blast for Trapnest. Abandoned by her parents and raised by her grandmother, Nana was expelled from high school after she was falsely accused of prostitution. Despite these hardships, Nana "polishes the shards of her dreams" and is determined to be successful as the lead vocalist of Blast. She gets engaged to her first love, Ren, although she also has lingering, ambiguous feelings for Yasu. In the future scenes it can be interpreted that Nana ran away from Japan and cut all ties with her friends. This may be triggered by the death of Ren, her fiance, and the events that followed. Her favorite designer is Vivienne Westwood, and her favorite band is the Sex Pistols.

Shinichi Okazaki (岡崎真一, Okazaki Shin'ichi^?) a.k.a. Shin (シン、シンちゃん^?)

He is the bass player of Blast. Though mature and tall for his age, he is 15 years old and is the youngest member of the band. Because of his dysfunctional family, Shin left his home and abandoned his original family name. He moonlights as a male prostitute with Reira being one of his "clients". Among other things, he is an expert mahjong player and a confidant and early roommate to Nobu. He stops seeing Reira to protect her status and his own feelings—also possibly sparked from fear by Takumi's warning. Ryōko Kawashigi, one of his older clients, bears a striking resemblance to Reira and he sees her again after the two musicians ended their relationship. She lives near his parents' apartment, works as a stewardess, and is the one that taught Shin "bad things". He and Ryouko were put under arrest for possession of marijuana which caused BLAST to withdraw from their tour. In the future it is shown he has become an actor.

Yasushi Takagi (高木泰士, Takagi Yasushi^?) a.k.a. Yasu (ヤス,ヤッさん、ハゲ^?)

He plays percussion and is the leader of Blast, usually handling the business partnerships and financial decisions needed for the band's success. His favorite cigarette brand is "Black Stones", from which the band got their name. He is also a lawyer in training, despite his "scary" appearance (clean shaven head, many earrings and dark glasses). He is the big brother figure for Nana O—and sometimes Nobu—and acted as Nana's "guardian" when she arrived in Tokyo. While he admits to being in love with her, he baits Ren to rekindle their love for each other. Ren says that Yasu "always stood back and let [Ren] have what ever he wanted" to Reira in chapter 53. Nana realizes that Yasu will always consider Ren's feelings first, and the reason Yasu will never pursue his feelings for Nana is not that he is "a prude" or loves her like a sister but because she is Ren's girlfriend. He looks after her in place of Ren, who can not. In the past, he shared several ties with Trapnest's members. Yasu and Ren grew up in the same orphanage and remained close friends when Yasu was adopted. He dated Reira while in high school and was jealous of Takumi's success and influence on her, which he later relates as the reasons for their break up. Also, he is the oldest member of Blast, which Nobu sometimes teases him about (by calling him "old man"). He is in a budding romance with Miu to the surprise of Ren and others—who were sure he would date Reira again. When Nana sees him with Miu having breakfast she immediately assumes they had sex and is obviously hurt by this thought, avoiding Yasu and even comically screaming that she does not care who he sleeps with after he asks her if she is alright (he was referring to the hangover she was complaining of when she entered his room.)