Bab 76: Chapter 76 - Experimentations[Incoming Badass Warning]

After contemplating whether to hire adventurers or fight them himself, Haruki had come up with an excellent alternative. Every time he saw a monster, he would open up a portal into the dungeon and have them all cramped into an extremely small room. After a while, only the strongest of the bunch survived, unfortunately, however, as he kept descending down the cavernous dungeon all he saw were goblins and slimes.

"Dark ice spear," trying to conjoin his magic affinities, Haruki kept experimenting on the weaker monster. "Dammit, it didn't work."

It rarely worked, but when it did the mana consumed to output ratio was marginally lower than the normal spells.

"Dark light, consume them all!" Crawling out of his skin, a miasma of dark consumed every living thing in its wake. Like a parasite feasting on a dead body, the miasma ate the victims alive as they screamed. "At least something is working."