Shimada, a former Self-Defense Force member, suffers from severe PTSD following the loss of a comrade in a firefight in war-torn South Sudan, a tragedy covered up by the government. Shining a light into Shimada's solitary life in illegal arms manufacturing is a job as an apprentice at a traditional Japanese fireworks factory. There he begins crafting fireworks alongside the master artisan and fellow craftsmen who embrace fireworks that illuminate people's peaceful lives. Yet, parallel to Shimada's journey, his comrades-in-arms with unresolved feelings team up on radical acts to expose the government's cover-up, escalating tensions and pulling Shimada back into the darkness he thought he'd left behind.
Akiko (Mai Fukagawa) is a former idol, but now lives an ordinary life. She works at a company and keeps reminding herself that she is happy and to have a fulfilling day. One day, she walks to work and falls down. She becomes stuck and unable to move. Akiko breaks down mentally and decides to quit her job. Now, Akiko doesn't have a job, a boyfriend, and only 100,000 yen (~$700 USD) in her bank account. Her friend then tells her that she should move in with 56 year old salaryman Sasapon (Arata Iura), who lives alone in his house in Tokyo. When she visits Sasapon, he invites her to stay at his house on the condition that she can live there until his retirement. Their strange living arrangement begins.
Daiki, who works part-time as a bartender at joshidaikoji (meaning Women's college alley), discovers a junior high school student in cardiopulmonary arrest in a park while wearing a cosplay costume. Since it was three days after the dead body of a junior high school student was found at the same place, Daiki is brought in by the police as a suspect in a serial murder case. His sister Mio, who works at a club in Yanagase, saves him from this predicament. The two sisters always quarrel whenever they meet, but in order to prove their brother's innocence, they pursue the real culprit in the case.
A quiet office life shifts when Ayumu falls for the man who refills the vending machine.
Yurina Yanagi is a Japanese actress and model from Osaka Prefecture, Japan. She is known for her main role in the movie, Junpei, Think Again, as Kana, and her support role as Saiko Yaotome in Kamen Rider Ex-Aid Trilogy: Another Ending 3-episode special trilogy.