四つ星の白昼夢

You must have exactly 0 fragments going into the final boss battle. There are tools and spreadsheets using math on the Completionist Discord to help you figure out whether you can accomplish this task or not as early as possible.

Pink Floyd song "Money"? "New car, caviar, four star, daydream; Think I'll buy me a football team" The Trailblazer has spent all their Cosmic Fragments, just like the protagonist of this song with their money. The Chinese title for this achievement came from the actual translation of the song. - Credit: Raiden