Mangetsu no Ou

Amano works in a hotel that caters to visitors from the other realm. When Tsukiyomi, the king of the other realm visits the hotel, Amano discovers the truth behind the disappearance of his childhood friend, Mitsuki.

Note: Polar Night is a reprint of Mangetsu no Ou, but with corrections, 36 additional pages, and the inclusion of doujinshi the mangaka wrote after the main story was first published. However, it does not contain the unrelated oneshot, Jet Leg, which is included in the tankoubon for this series.