Briefly about I Was Summoned to Another World, but I Got the Power to Cut Anything, so It Was Easy Mode manga:
One day, Haruki Ito and his entire class are unexpectedly transferred to another universe. At the called location, they are all imprisoned, one male and one girl per cell, and coerced into a physical connection with drugged food.
Haruki is matched with Shizuka Inoue, a girl who appears plain but is actually incredibly attractive behind her exterior. When they are eventually released from prison, the females are shown to be enslaved, and in order to ensure their safety, the lads must now assist the country to which they were summoned by exterminating monsters.
Haruki begins training for Shizuka’s sake and discovers that he has been given a divine power known as the “Ripper.” This power, unequaled in its might, distinguishes him from the rest as a force to be reckoned with. As the story unfolds, Haruki finds the true depth of his newly acquired power.
