What is the Parasitic Mushroom Arc? Synopsis and Famous Scenes Summary | When & Which Manga Volume [Chiikawa]

Noticing a white mushroom-like object extending from Chiikawa's head, Hachiware realizes it might be parasitic. Telling a confused Chiikawa that they will cut it off, Hachiware checks the base of the mushroom while mentioning that they have had a similar experience before. Seeing that it seems possible to remove it down to the root, Hachiware reaches out carefully to avoid cutting Chiikawa's skin, but the post stops right before the cut.

While thinking about how to handle the situation, the mushroom grows significantly and lifts Chiikawa's body into the air. A part that appears to be the base falls off, and Hachiware assumes it has been removed down to the root. However, the mushroom left behind begins to move on its own, creating a situation entirely different from the expected procedure.

Chiikawa is swung around by the part extending from above, while Hachiware compares the small fragment in their hand with the moving mushroom. The task of removing the parasite turns into dealing with the mushroom's unexpected behavior. This is compounded by Hachiware's story about how the last time they stir-fried and ate a parasitic mushroom, it was delicious, causing the conversation about the procedure and food to progress simultaneously.