In the Land of Leadale, Vol. 1 (manga)

When Keina Kagami's life support accidentally gets cut off, she suddenly finds herself in the body of the high elf Cayna, her avatar in the VRMMORPG known as Leadale. But two hundred years seem to have passed from when she last logged in, and as she seizes this second chance at life in a world both familiar and strange, she'll have to figure out for herself just how much has changed in all that time...