Survival in Another World with My Mistress! (Light Novel) Vol. 2

ROCK-HARD PROTECTION! Its official: Sylphy has Kousuke wrapped around her little finger! His beautiful dark elf mistress wants to liberate her kin, and Kousukes ready to get the job done! Their first order of business is building a giant stone wall around the elven village to keep out any threats. After a hard days work, Kousuke always finds himself in the arms of a lovely lady or three!