Several years in the future, the members of Blast plus Hachi and her daughter Satsuke meet each other again at Room 707 for the fireworks display, but strangely Nana is not present. Back in 2001, Hachi has cold feet about seeing Nobu again so Nana lies and tells her that he won't be present for the fireworks.
Trapnest and Blast make their TV appearances. Hachi admits to Junko that she feels the desire to explain things to Nobu because Shōji never explained his affair with Sachiko to her. The members of Blast play Mah-Jong with their neighbours, Yuri and Miyu. Hachi arranges to meet up with Blast for the fireworks.
As both bands rehearse for a TV appearance, Yasu confronts Ren about his drug use and treatment of Nana. Ren later proposes to Nana, followed up by a session of rough sex which excites and terrifies Nana at the same time. Reira and Shin manage to sneak out for some alone time, while Nobu is discouraged when he learns that Miyu is seven years older than him.
After Blast returns from their training camp, the band members move into Gaia's boarding house. Reira replies to Shin's email and she and Mari later find Ren asleep in the bath. Takumi meets Nana's family for the first time. Nana starts hyperventilating after Nobu reveals that he has given up on Hachi.
Hachi's sister Nao asks Hachi about Nana, later Takumi arrives home from London and gives Hachi her engagement ring. With the rest of Trapnest still in London, Ren and Reira begin to realise the depth of Yasu's feelings for Nana when Mari points out that he has placed Blast ahead of his law apprenticeship commitments. Meanwhile with the members of Blast sent to a wilderness camp by Gaia, Shin takes the oppurtunity to email Reira, while Yasu admits to Nana that he is in love with her.
With Blast holed up in a secret hotel room, Misato has come to visit again while Yasu and Gaia finally make a decision about the debut. Nana tells Nobu that she has a plan to get Hachi back. Trapnest's members leave for London and Hachiko heads back to her hometown, while Reira discovers that Blast's debut single will be released on the same day as Trapnest's new single.
The love life of Ren and Nana has leaked to the press. Blast suspects Gaia to be involved. Nana faces the consequences, and leaves a message for Hachiko through a TV broadcast. Hachi on her side is having problems with Takumi and confesses to Junko and Kyosuke that she is in love with him, even though she wishes that she could love Nobu.
Shouji, Junko and Kyosuke discuss the possibility that Hachi's fiance is Takumi from Trapnest. Meanwhile Hachi meets Naoki for the first time and shows off her new apartment to him and Takumi. Takumi tells Hachi that she doesn't have to keep their relationship a secret from their friends and family and expresses his desire to go and meet with Hachi's parents and sisters.
Nana goes to live with Ren for the two weeks that Trapnest have off. Reira and Takumi visit America and bump into each other there. Nobu walks Hachi home but Takumi turns up and walks her the rest of the way. Hachi avoids going to watch BLAST practice because she can't face Nobu and Misato comes to visit for summer vacation.
BLAST are noticed by a record company thanks to Yasu. Nana tells Hachiko what Takumi said to Shin and Nobu but also tells her that Nobu is in love with her. Later that day, Nobu confesses his true feelings to Hachi. Shin leaves his lighter at Reira's and gets it back but spends no time with her much to Reira's chargrin. Hachi is torn between Takumi and Nobu.