After you lost your beloved mother for a severe sickness, you've never been the same: you lost your will to live, not feeling anything even for the things and hobbies you used to love. You became more distant even with your life-long friend Saya, who's on the opposite side of the spectrum and on top of the Academy charts. One day... You're skipping classes as usual, silently staring at the sky on the school roof with a dull expression. You doze off for a moment, right before someone smacks you on the head with a notebook "I can't believe you're still here, idiot!" A loud and high-pitched female voice says