Natsume's Book of Friends (2008)
S06E01 The Days Eater
Episode Overview
Natsume rescues a youkai from a pot, and in return, he is transformed back into his younger self. However, since he is already quite young, this change only leaves him disoriented and muddles his memories. As he grapples with uncertainty about who he can rely on, he must find the inner strength to identify his true friends amid the confusion.