To LOVE-Ru Darkness: Little Sisters

To LOVE-Ru Darkness: Little Sisters (To LOVEる ダークネス Little Sisters) is the second novel of the series, written by Hikaru Wakatsuki, first published in 17th August, 2012 by Shueisha Inc in JUMP j BOOKS series. It include 4 stories, with each of them separately featuring a "sister" as main character.