The Kokon Tōzai Yōkai Daizukan (古今東西妖怪大図鑑, The Picture Guidebook of All Yōkai Everywhere), or Kokon (古今) for short, is a sentient picture book that contains information on yōkai that appears in the 2007 anime.
Kokon is a picture book considered to be a hidden treasure from the tengu that stores information on yōkai.
Kokon has a will. Kokon gets violent with strangers, and it is especially sensitive to ones with secret intentions. When it felt Nezumi-Otoko's secret intentions to use it for his own reasons, Kokon hit him multiple times and fled, angered.
When Kawauso, Neko-Musume, Medama-Oyaji, and Nezumi-Otoko found Kokon, it was hiding under a deck. It became afraid of Neko-Musume when she revealed her bake-neko face while trying to persuade Kokon to come out. Medama-Oyaji, who was small enough to fit under the deck, approached Kokon and was able to persuade it through his determination to save Kitarō. Kokon becomes fond of Medama-Oyaji and lifts him on top of itself, happy and understanding the situation.
Information Recording: It is able to suck in rumors from the wind and automatically adds and updates information on yōkai.
Intent Sense: Kokon can sense secret or malicious intentions (as it did with Nezumi-Otoko).
Seal Creation: Kokon is able to create seals to use on yōkai.
|Applications||Instegram • Lein • U-Tube|
|Ghost Tribe||Chanchanko • Geta • Yōkai Ocarina • Yōkai Post|
|Common Objects||Bell of Dream Control • Gyogangan • Kaifukugan • Johari Mirror • Kokon Tōzai Yōkai Daizukan • Magic Stone • Yōkai Bat • Yōkai Camera • Yōkai Censer • Yōkai Glasses • Yōkai Incense|
|Seals||Kaname Stone • Key of Iwaya • Octopus Kaname Stone • Spirit Paper • Spirit Brush • Yasakari Sphere|
|Weapons||Kiyome no Honō • Ring of Arcana|
|Applications||Curse App • Omega Talk|
|Vehicles||Clam Boat • Ghost Train • Phantom Train • Whale Blimp • Yōkai Car|