User blog comment:B214/Question and Answers 4/@comment-82.178.92.249-20150309192808/@comment-25032153-20150313073556

but the ones that did the sacificed themselfs to prevent Issei's soul from dying was just the eco left over so the original souls from these ecos would still be alive souls in the land of the dead just the ecos are now dead from the curse as they all together acted as a whole soul.