Sagitter's manga / #harem(2)

In which our mc gets isekaied with his classmates and then gets betrayed by them. He is left inside of a dungeon and fueled by rage, he starts his journey to get to the top of the dungeon. Starts out pretty okay. The first girl was pretty good and not the most clingy and could fend for herself. Then comes the bunny girl... Oh no.

In which teenager who looks like an adult is sent to another world but doesn't like the people who summoned him and decides to kill everyone. He goes on the run, finds two new slave girls that will probably join his harem, and kills some more people. Good so far. (1/21/2019)