Natsu Hyuuga is the creator of the global hit novel, manga, and anime series The Apothecary Diaries, which she developed into a published series from a free web novel uploaded in 2011. Her more recent works include The Failure at God School and You Can't Bluff the Sharp-Eyed Sister, which is being published in English by Kodansha.

Yo Asami is a manga artist whose works include The Forgetful Detective (with NISIOISIN), Seraph of the End: Ichinose Guren: Catastrophe at Sixteen, and You Can't Bluff the Sharp-Eyed Sister, in collaboration with Natsu Hyuuga, the creator of The Apothecary Diaries.