Reread manga 日本

I don't want to put it in the tamer list bcs it's not cute at all. This is typical of web comic is,even tho it's manga. You know like killing this n that,kinda gore sometime,n the thing i don't like is there'a someone or creature get brutally killed,n it's appear in here
Mc has no skill even tho he already be adult,he need to protect the lil sis bcs the parent is missing,n the lil sis is in wheel. One day at the job to clean the mess,the corpse is reawake n attack mc n his collagues