Now available in print from Overlap Novels. The manga adaptation is currently being serialized in Monthly Shonen Gangan!

On his deathbed, the Great Sage reincarnated into the [infinitely evolving slime] he had created with powerful magic. He attempted to enjoy his new life—or rather, his new slime existence—but was caught and tamed by his adopted daughter and apprentice, an elf.

"Sla-chan is weak. You can't go far away."

Days of being tightly hugged by his adopted elf daughter. This isn't so bad, actually. As her familiar slime, he'll watch over his daughter while secretly continuing to [evolve]. Eventually, while hiding his true identity until he can take on a human form... he'll eliminate any unsavory characters who dare approach his beloved daughter.