As Eric, a paladin, he was captured by a succubus in a city of succubi. There were only two possible endings: corruption or death. But perhaps there was no difference, since either way he would become one of them.
As Yun Duan You, a transmigrator, he refused to accept that his fate in another world would end there.
Luckily, his companions were all transmigrators too. Though he was a paladin, his religious principles were flexible. He had mastered necromancy and turned everyone into undead.
He himself happily became a certain mage's familiar, embarking on a delightful encounter with her.
Becoming undead was not the end, but the beginning of her continued existence.
(Transformation story)
