Ayyy, Aging

A group of Japanese politicians, the sitting prime minister Kentaro Ishita among them, meets in a courtyard. Reading a transcript, Ishita seeks confirmation that the Ear Devil's erasure truly happened, and Communications Minister Hadaji Sakagami verifies it. Defence Minister Shin Toma turns to the Public Safety Devil Hunter representative, who proves to be Fumiko Mifune, and asks how erasure might serve a good end. She argues humanity can advance by wiping out whatever blocks progress, noting that Public Safety holds a favorable rapport with the Aging Devil, who would gladly allow the Chainsaw Devil to erase it.

Yuki Tomoda, the Chief Cabinet Secretary, raises the matter of harmful side effects, but Fumiko waves them away, pointing out that losing ears did not erase ear-related items like phones or radios. Tomoda calls the affair messy, and Fumiko agrees, saying that is precisely why they keep Chainsaw Man's chaos in check. Toma asks the Devil's price. Fumiko discloses that the Aging Devil demands 10,000 Japanese citizens, from infants to nine-year-olds, be put to death before a mirror. The gathered men are largely alarmed, yet former Finance Minister Tadashi Hasegawa approves the scheme, revealing his grandson is already rounding up orphans. He orders Economy Minister Miki Takanashi to fill the remaining quota by naturalizing any refugee children his agents locate, and when Takanashi balks, Hasegawa threatens to add his four kids to the count, forcing him to yield.

Hasegawa assures Fumiko the children can be gathered inside two days and tells her to confirm with Public Safety. As she moves to call, she senses something wrong: every mouth has vanished. Scenes of mouthless animals and people follow, revealing the Chainsaw Devil has erased not only mouths but also snow, octopuses, and bitterness.

Fumiko Mifune presents the Aging Devil's demand: 10,000 young children executed before mirrors in exchange for the power of erasure. Hasegawa forces the plan through.

While arranging the children's delivery, Fumiko discovers the Chainsaw Devil has erased mouths, along with snow, octopuses, and bitterness.

This Volume 19 chapter came out August 14, 2024 and carries the Aging Devil arc from Chapter 173 into Chapter 175. The Japanese title romanizes as Ōi oi over seventeen pages. It marks fresh concepts, mouths, snow, octopuses, and bitterness, falling to the Chainsaw Devil's erasure.