S01E01 My Friend's Little Sister Has It In for Me
Akiteru just wants to work toward his future, but his friend's little sister won't allow him any peace.
Now that Mashiro has moved to his school, can Akiteru manage to make her open up to him?
For high schooler Akiteru Oboshi, the whole youthful experience thing—like fun, friendships, and even having a girlfriend—is a complete waste of time. So when his best friend’s sister, Iroha Kohinata, keeps teasing him, Akiteru naturally finds it annoying. She practically lives in his room, she’s always on his bed, she’s just a raging storm of clinginess! Why is she only annoying around him?!