Final answer:
Without more context, it is not possible to determine why Nuto left his job at the convent; the question lacks sufficient detail.
Step-by-step explanation:
The question about why Nuto left his job at the convent does not provide enough information for a definitive answer. To accurately determine the reason behind Nuto's departure, the question needs to include more context about the character Nuto, the circumstances of their employment, and what led to the decision to leave the convent. Without additional information, any answer given would be mere speculation.