Urenokori no Dorei Elf wo Hirotta node, Musume ni Suru Koto ni Shita

Synopsis

Weiss comes across a high elf girl for sale, a superior species of elf that is thought to be extinct. He decides to buy her and raise her as his daughter. She doesn't even know the language, but Weiss's hard work raising her pays off...? You won't be able to take your eyes off the high elf as her growth doesn't stop! (Source: Kadokawa, translated)