Okko's Inn

is a Japanese children's novel series, written by Hiroko Reijō and illustrated by Asami. Kodansha released twenty volumes between 2003 and 2013, and a manga adaptation illustrated by Eiko Ōuchi was serialized in Kodansha's shōjo manga Nakayoshi and collected in seven tankōbon volumes. An anime television series adaptation by Madhouse and DLE aired from April 8 to September 23, 2018; followed by a film set to premiere on September 21, 2018.

Plot
12-year-old Oriko Seki (nicknamed "Okko") lost her parents in a car accident and moved to her grandmother's Onsen Ryokan "Haru no Ya." With the ghost "Uribou" cohabitating with her and all the other odds, she ended up training to be a young female innkeeper. At first, she didn't like the training, but gradually felt her admiration for her title and began to train seriously. Thus, Okko's growth of the youngest innkeeper begins.