This game piece reminds us that no matter what happens on this game board, everything is due to the curse or the Sonozaki family pulling someone's strings.

No, to put it in my words, this is the piece that makes everyone aware of the existence of Rule Z.

It's hard to notice with just this piece.

But this is a complicated Fragment where Shion Sonozaki, while trapped in Rule X and mistaking it for Rule Y is hurled about,

comes to notice the existence of Rule Z.

But this is also the piece that teaches us the rules of the game board.

By the way, the piece called Shion Sonozaki is a piece coming from the outside, from the game's point of view.

She dislikes Satoko Houjou at first, but through this and another piece, she learns something important,

challenges Rule X, and then grows to be a powerful piece to fight Rule Z.

The most ridiculous part of this Fragment... is that it's hidden so cunningly, and doesn't seem that way at all with just a passing glance.

Learn, learn from your mistakes.

Please become a powerful piece and lend me your strength to defeat my enemies.