Dimension Totsu Lovers!!

After the antireality disaster called Monsters drove humanity to the brink of extinction, 200 years passed and Japan achieved recovery through an organization called the Academy. But behind the peaceful world, darkness always lurks. Enju is a Magician — an enemy of humanity — ordered by his father to infiltrate the Academy and assassinate the student council president. He is stunned to learn the target's name: Yoruno Sakura, the girl he has been in love with since he first saw her. Communication-impaired, sheltered, and knowing nothing of society, Enju must somehow infiltrate the Academy as an ordinary student while reckoning with the impossible task before him.