Episode 7

Magic (魔法, Mahō) is the seventh episode of the Welcome to the Slave Harem in the Labyrinth of the Other World anime series.

Plot
The bandits fall into the ambush. Kaga spots the thief and tries to apprehend him with experimental magic. When he uses the spell Equivalent Exchange, it lowered the thief's HP to zero Alan thought that the thief was carrying a self destruct orb that caused the explosion. Alan rewards Kaga for protecting his shop. Almost fatally low on magic, Kaga decides to enter the labyrinth to harvest magic from monsters and finds that using Equivalent Exchange unlocked the Mage title. He decides to buy a staff at the next opportunity but suddenly stumbles across the second floor's boss room, containing a giant caterpillar which he and Roxanne quickly defeat. Entering the third floor, they find the new monsters are Kobolds. Returning to the surface, Kaga hires a mage to teleport him to Imperial City and then to Quratar so that in the future he can teleport himself and Roxanne there for free. That night, they once again relax. Kaga becomes determined to buy a house so Roxanne no longer has to put up with living in taverns. Teleporting to Quratar, Kaga learns adventurers are charged a fee every time they enter the labyrinth until Roxanne points out they can sneakily teleport inside for free.