Slime Tensei.: Daikenja ga Youjo Elf ni Dakishimeraretemasu
スライム転生。大賢者が養女エルフに抱きしめられてます
A dying sage is reborn as the "Infinite Evolving Slime," a creation of his own powerful magic. Choosing to embrace this new existence, he finds himself captured and domesticated by his elven disciple, who is also considered his adopted daughter.