LUNA: Ookami Shoujo Luna

The nationally-known superstar Oguri Ryu and his pet wolf Luna were best friends in public and in private. Ten years after they first met, as they watched the full moon at night, something suddenly happened to Luna. Startled, Oguri opened his eyes to find a naked girl in Luna's place! Ryu kept Luna by his side as a stylist to hide her true identity, but his uncle, who treated Ryu as a money-making tool, became suspicious of Ryu's relationship with the girl...? "I'll protect Ryu with my life!" A unique romance between the loyal wolf girl Luna, and her kind master! (Source: Piccoma, translated)