Two kinds of "ending" are tracked separately
- Chapter completion: clearing all 4 markets/chapters in a formal playthrough is its own achievement, separate from watching all 4 chapters' stories in full and unlocking CGs from all 4 chapters.
- Character endings: tied to the affection system (see Customers & Relationships), a character's "canonical ending" unlocks separately from chapter completion. Achievements exist for unlocking 1, 4, and all 8 characters' canonical endings.
- Clearing Pingzhou Night Market specifically is what unlocks Endless Mode — a distinct, named milestone from finishing the other chapters.
Unconfirmed
Whether chapter outcomes branch based on choices, how many total distinct endings exist beyond the 8-character-ending count, and whether character endings interact with chapter choices are not documented anywhere official yet.