EP12 & EP13 - Recalling (Unreleased Background Music) | Doom At Your Service
I couldn't find this piece of Doom At Your Service's Background Music online. If you know its name, please leave it the comment section below!
This song plays when Tak Dong Kyung's bracelet gets off her wrist in EP12, while saying goodbye to Na Ji Na. It is also present in EP13 when Myeol Mang leaves Tak Dong Kyung's room to search for So Nyeo Sin.