Suffering from a bit of insomnia pondering the mysteries of life? Well, COSPA has the answer. Light novel/manga/anime Hyouka's mystery obessed Eru Chitanda is being featured on a new sleeping mask with her eyes on one side and her catch phrase "I Can't Stop Thinking About It!" on the other.
The item goes on sale in later October for 1,260yen ($16).
Code Geass and Certain Magical Index masks are also due in October.