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 and Hachi travel back to her hometown to see Trapnest perform. While there, Hachi learns a few things about Nana she didn't know before, including her feelings for Ren now.

After the concert, Ren calls Yasu, having noticed Nana in the crowd. With Yasu's help Nana contacts Ren and arranges to meet in their hotel...

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

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.

Nana and Nobu argue over what to do about the baby and whether or not Nobu should become the baby's father. Nobu goes to see Hachi. Reira explains the 'red thread' belief to Shin.

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.

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.

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.