Amarion, a knight from the barren Northern Kingdom, fought monsters daily to survive. Then she received a sudden marriage proposal from Grand Duke Mort, known as the ‘Walking Death’. Lured by the enormous dowry that could sustain her northern kingdom, she accepts... On their first night together, she faces an unbelievable proposal. "Your duty is one thing: to be by my side when I sleep. But you must remain awake. If it proves too much, you may cut me down. I shall hold no grudge." Leaving behind these enigmatic words, he falls asleep. That night, Amarion realizes why the duke had to seek out a knight like her to be his wife. As sleepless nights drag on, her nerves stretched taut, the duke's demeanor grows ever sweeter, until finally, death beckons her with an ecstatic smile. “My lady, may I call you by name?”(Source: Naver, translated)