wolfiekilu's manga / #Walking means -1HP(1)

MC died and was summoned by the demon king for a contract cause orighost contracted the DK for happy marriage but orighost died of poisoning so DK just found a soul and happened to be mc. So they contracted for mc to happy marriage life with ml the duke for 6 months and she will return to her world so MC accepted. But MCs body was super weak if she reached 1/3 of her health she will cough up blood lol and if she trips her entire organs will be displaced MC then lured ml using his love for alcohol, when MC was walking slow and ml knew that MCs body was weak so he carries her to the carriage. MC proposed a contract marriage for 6 months with the condition she will give the entire Reno(MCs family) fortune, ml accepted. So MC became shameless and made ML her personal car. Ml asked about MCs illness, MC told the truth like if she took 400 step she will cough up blood, so he doubt the rumors that MC abuses slaves and flips table were false, but it was orighost did it. So ml now volunteers to carry her around. After signing the contract, ml asked what MCs plan after 6 months, she reason that she wants to travel, leave the dukedom and have a fresh start which ml bought. Mc then lives with ml, ml had customize everything for mc, like lighter table wares, and cushiony floors. He even had the gardens carpeted so she can safely walk The DK appeared in mcs dream giving her 2 bottles of blue liquid and 1 red, the blue let her body to normal for 24 hours while red let her travel anywhere so when after 6 months mc can take it and it will be her grave. Mc and ml attended a banquet, MC had super hearing and heard someone saying why she isn't dead yet. Mc remembered her talk with DK why just not revive orighost, but her soul was so broken it cannot be revived back, orighost also suffered and lonely and hated herself for driving her bro out. Mc saw in orighost drawers letters of bro signs of being read many times. Mc then returned to her estate and saw the butler obviously embezzling her riches Orighost was super villainous that her younger bro moved out of the house, he contracted spirits. He returned after hearing that MC and ml wed. Then his spirit informed him that MCs body was already dead. Mc told the truth that his sister is dead and she is not his sister, bro was devastated, cause she was still his family