ᴀᴜᴛʜᴏʀ'ꜱ ɴᴏᴛᴇ

Park Hyunsoo, a Korean Investigator who unexpectedly finds himself transported to the Immortal realm. As he forms a complex connection with the King of the realm, Hyunsoo discovers the dangerous truth that links this ruler to the chaos taking place in the Human realm.

(This book is a romance/yaoi book lol)