Author: Kankitsu Yusura
Translator: Andrew9495’s MTL corner
Completely Translated? No
Last update: Chapter 03 - Episode 116
Description: Konoe Yuuto is a genius martial artist who is summoned to a different world where slave trading is legal. There, using his 【Ability Looting (Skill Taker)】 cheat ability, he steals the abilities of monsters he defeats, and starts building a slave harem while hoping to live a carefree life after retirement.
Original Story can be found here: http://ncode.syosetu.com/n0822cl/