So I started reading this a few weeks ago, the premise is pretty much the mc falls in love with this guy. He ends up falling for her sister and when it's found out the sister is chosen to be sent as a sacrifice to the (ancient dragon tree??) He asks the mc to do it instead since she's known for having resistance to miasma. She agrees and ends up surviving for many years with a holy sword (that can talk to her). Suddenly a portal opens and a young man comes through who looks identical to her first love. It ends up being his son who has come for the holy sword as a gift for the princess of the kingdom so he can marry her.
So I started reading this a few weeks ago, the premise is pretty much the mc falls in love with this guy. He ends up falling for her sister and when it's found out the sister is chosen to be sent as a sacrifice to the (ancient dragon tree??) He asks the mc to do it instead since she's known for having resistance to miasma. She agrees and ends up surviving for many years with a holy sword (that can talk to her). Suddenly a portal opens and a young man comes through who looks identical to her first love. It ends up being his son who has come for the holy sword as a gift for the princess of the kingdom so he can marry her.