If your progress for the HIA Commemorative Coin collection is stuck, first try traveling to Lumina Square and interacting with the Sage in a Barrel.
Troubleshooting Steps
If the issue persists, please follow these steps in order:
- Ensure you have completed any prerequisite commissions from the Proxy Network schedule related to the NPC Mark, such as [Combat] Best Script.
- Visit Mark at the Ballet Twins during the morning or afternoon and speak with him.
- After speaking with him, change the in-game time to evening or late night.
- Advance the time to the following morning or afternoon and verify that Mark is no longer in his original position.
- Go to Lumina Square in the morning or afternoon to find and speak with the trio of NPCs (a Public Security Officer, an old man, and an old woman) near the Sage in a Barrel.
- After this interaction, change the time to evening or late night.
- Return to Ballet Twins during the afternoon. You should find the NPC Kaibara beside the small car, which will allow you to obtain the coin.
Additional Information
For further assistance, consider checking guides and video walkthroughs on HoYoLAB or other community platforms. Discussing strategies with fellow players can also be helpful.