Fami/History

Justice Devil arc
Fami made her debut after Yuko was brought to the brink of death by Asa's sword attack. While not revealing her identity at first, she told Asa that she could bring Yuko back to life and would do anything for her little sister. Yuko is promptly revived in gigantic size, and Fami disappears shortly before Denji arrives.

Dating Denji arc
Fami reappears following Yuko's death, along with the rest of the Devil Hunter Club. She later meets Asa again at the Tanashi Aquarium, introducing herself as the Famine Devil and revealing that she cannot turn Denji into a weapon until she loses her morality before suddenly disappearing and trapping the two inside.

Soon after Asa and the others successfully break free from the Eternity Devil's power and Yoru defeats it, Fami is seen standing on top of a building pondering about her failed plan. She then notices Hirofumi Yoshida looking directly at her, smirking, as they both engage in a staredown.

Falling Devil arc
Sometime later, Yoshida asks to meet with Fami at a coffee shop. Fami takes the opportunity to order a massive amount of food, as it is Yoshida's treat. Yoshida reveals his knowledge of Fami's identity as the Famine Devil, but she does not care nor try to hide it. He tells Fami about an urban legend concerning a prophecy of Nostradamus predicting the end of humanity in July 1999, and Public Safety believes that whatever Fami is planning is connected. Yoshida threatens Fami to talk, and she gives him the name and location of the primal devil that just appeared on earth.

During the attack Yoru correctly speculates that Fami is involved with it. After the Falling Devil fails to feed Asa Mitaka to a devil Fami arrives and reveals this entire attack was orchestrated by her with the intent of starving and enslaving Yoru, she asks Nayuta whom had interfered and foiled her plan about what exactly has she done. She proceeds tells Nayuta about the prophecy trying to convince her to aid her. Although they both have the shared interest of loving pizza Nayuta declines due to having to study.

Current arc
A few days later, Fami arranges Haruka to appear on a public talk show, in which the latter is humiliated on live television. Meeting with Fami backstage, Haruka questions why she had him go up there in the first place, to which Fami informs him that ridicule was the whole point and tells him not to think about it. A mysterious figure appears behind Haruka, telling him to listen to what Fami says. According to the mysterious figure, Haruka is to operate as the "face" of the Chainsaw Man Church while Fami is to operate as the "brains."