Mount Takao enters the story as a possible refuge for the captured monkey: after Mizuki asks that he be forgiven, the Sakakis agree to take him there and release him, offering a practical resolution to the conflict over his theft of names.

Proposed Release

Mizuki asks Mr. Sakaki to hear the monkey’s explanation and forgive him if he tells the truth. She argues that he is not evil by nature and has already suffered, and suggests that releasing him in the mountains might keep him from troubling anyone again. Mr. Sakaki accepts her proposal, making Mount Takao the named destination for the monkey’s promised fresh start.

The Sakakis’ Plan

The monkey pledges not to return to Tokyo or wander through the sewers again. Mrs. Sakaki later turns the proposal into a concrete plan, suggesting that she and her husband drive to Mount Takao the following weekend to let him go. Mr. Sakaki agrees, noting that their new car would make the trip a useful test run.

Narrative Significance

Mount Takao is not described as a setting the characters visit; it appears as the intended endpoint of the monkey’s release. Its significance lies in the proposed change of circumstance: instead of punishing him, the Sakakis would remove him from the city and give him a chance to start over. The plan also follows Mizuki’s decision to accept the return of her name and live with what lies beyond her immediate control.