An Oath To Serenity

Kim Taehyung, a 22 year old who suffers from anxiety which causes him to end up isolated and lonely for many years. Taehyung ends up creating someone named jeon jeongguk in his mind. Jeon jeongguk helps taehyung cope with his anxiety and fears, but what he doesn't know is that jeongguk is a spirit that died years ago...