The Blue Spider Lily.

It was the key component of the experimental drug that started it all, the medicine that turned Muzan into a demon.

The Upper Ranks had two purposes: annihilate the Ubuyashiki Family and find the Blue Spider Lily. Yet none have successfully done either.

Under the shroud of the night, Upper Rank Three, Akaza was on the lookout.

The search for the Blue Spider Lily was a part of his nightly routine; he had scoured almost every nook and cranny but to no avail.

This night was no different; his yellow eyes scanned the surrounding grasslands in search of the flower, it was a fruitless endeavor really.