Shindou Shouhei is smart student and an introvert who submits web novels online in pursuit of his dream to become a novelist. Upon their parents' remarriage, he and his popular and extrovert classmate Rino became siblings and started to live together. Despite their polar opposite personalities, they have one thing in common: They share the same hobbies as fellow otakus.
Thus, their new life as siblings under the same roof starts...
