My Tenant is a Monster is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The Evil Forces that have been hidden thousands of years have resurfaced. The human world once again is in Jeopardy. Young Zombie King Zhang Xia need to reunite all the powers that once topple this forces for good, and in order to love and be loved, it is necessary to turn this world upside down if that’s what it takes to conquer and defeat the enemy.