Zettainaru Kodokusha (Novel)

from yen press: minoru utsugi, a teenager who lives a peaceful (if boring) life with his sister-in-law, finds his life changed when extraterrestrial contact grants his dearest wish, leaving him with the power of the solitude. but the ability to realize absolute isolation only plunges minoru into a battle he never wanted to fight. as his old life comes to an end, he steps into a new role—as the isolator!