Thirty-five-year-old novelist Makio Koudai never had a good relationship with her older sister Minori, who always berated her for being different. Due to this, Makio is not stricken with grief upon hearing the news that Minori and her husband died in a car crash. But when Makio is asked to identify their bodies, she runs into her 15-year-old niece, Asa Takumi, whom she has not seen in years. As Asa struggles to process her parents' death, Makio reassures her that her complicated feelings are valid and suggests that the teenager start writing in a diary as a way to cope with the loss. Upon learning that no other relatives wanted to take in Asa, Makio decides to become her guardian despite her lack of experience. In a world full of uncertainty, the novelist and teenager must learn to live with each other while figuring themselves out.

Seeking the key to the elixir of immortality, the group arrives at the fortress of the island's monstrous ruler, the Tensen. To survive and escape the island, cooperation becomes essential—regardless of whether one is a condemned criminal or an executioner. Meanwhile, the shogunate orders additional landings on the island of the Immortal Realm, led by Shugen Yamada Asayemon. Among them are the Ishigakure clan, who share a past with Gabimaru. Desperate to find the elixir and escape the island, Gabimaru and his companions face the Tensen in a battle that escalates into an all-out confrontation between humans and immortals! (Source: Twin Engine, edited)

Second season of Vigilante: Boku no Hero Academia Illegals.

Ex-convict Keiji Ueji appears in Sapporo, causing all the different factions to travel to the city in hopes of obtaining part of the map to the Ainu gold that is tattooed on his skin. At the same time, a figure who appears to be a copycat of Jack the Ripper terrorizes the streets of Sapporo. Saichi Sugimoto, Asirpa, and Yoshitake Shiraishi—joined by Fusatarou Boutarou the Pirate Oosawa and Vasily Pavlichenko—temporarily ally themselves with Toshizou Hijikata, as his faction's motives are somewhat less disturbing than those of Seventh Division's First Lieutenant Tokushirou Tsurumi. Asirpa attempts to collect all the information needed to tell apart the fake skins from the real ones, but she cannot decipher the map with certainty. Sugimoto swears never to part with Asirpa again, but the commotion around the serial killer allows for new betrayals and Tsurumi's plan for capturing Asirpa to advance. As the hunt for the gold nears its conclusion, the future of the Ainu rests in the hands of those who claim it first.