A Certain Trifle is a side quest available in Genshin Impact.
Your objective is to help Iaune with his task at work.
Here’s a walkthrough and guide of A Certain Trifle in Genshin Impact.
To begin the quest, talk to Iaune at Palais Mermonia.
Talk to Roialte
Next, talk to Roialte and he’ll introduce Semaine to you.
Talk to Cornelia
Iaune then tells about his problem about a keycap that is missing.
Talk to Cornelia to get replacement.
Talk to Estelle
Head to the workshop to find Estelle as she’s able to sell a replacement keycap.
Place the keycap on the typewriter
Go back to Palais Mermonia to place the keycap on the typewriter.
The quest ends here.