For high schooler Akiteru Oboshi, the whole youthful experience—like fun, friendships, and even having a girlfriend—is a total waste of time. So when his best friend’s sister, Iroha Kohinata, keeps teasing him, Akiteru naturally finds it irritating. She practically lives in his room, is always on his bed, and is just a whirlwind of clinginess! Why is she only annoying when she's around him?!
