Komatsu Nana's past is brought to a conclusion and we now reveal the past of the "other" Nana. Oosaki Nana is the vocalist in a local band, the "Black Stones", but problems soon arise when one of the members announce their intention to leave for Tokyo to join another band.

Nana's band, "Blast", are preparing for their first live concert. Hachi goes to see them and meets a strange girl connected with Nana's past.

Whilst apologising to Misato for her outburst the night before, it is hinted to Hachi that Ren used to be in Nana's band. Hachi asks Nobu to find out more about Nana and Ren's past.

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's first live is sold out. Hachiko feels lonely after Nana turns her down to celebrating at hers so she goes to see Takumi.

BLAST visit Hachi to celebrate their latest success and discuss record contracts. Shin convinces Hachi and Nobu to go to the convenience store to buy more wine. On the way, Hachi and Nobu are forced to face their feelings for each other.

Hachi decides she will break up with Takumi to be with Nobu.

Hachiko admits to Nana that she loves Nobu after spending the night at his place. Junko, her boyfriend and Shoji try to analyse why Hachi is with Nobu. Yasu and the record company manager meets with Shin's father to sign the contract.

Hachi feels ill during work and her boss tells her to see a doctor. Nobu gets Nana a job at the moving company he part-time works for so she can make some money. Hachi makes a shocking discovery.

Hachi is pregnant but doesn't know if it's Takumi's or Nobu's. She tries to hide it from those around her, especially Nana.