The Black Stones perform their new song for their management. Later, Shin and Nana have a big argument. Nana heads home to apartment 707 for the first time in nine days only to find that Hachi has moved out.

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.

As Blast's members excitedly prepare for the fireworks festival by cancelling their other appointments and finding disguises, Hachi heads to Jackson Hole where she encounters Shoji for the first time since their breakup. Meanwhile Takumi and Reira discuss Ren's desire to marry Nana.