Isshiki Iroha is now in her third year of high school. Despite studying hard for exams every day, she became increasingly frustrated at the rate of progress. So, at the recommendation of her friend, she decided to try enlist the services of a home tutor. And the tutor who showed up at her house was none other than a certain Senpai...

Old wounds are never forgotten, Hikigaya knows this well. He wears the battle-scars of his past proudly as reminders of who he is. Can the one who caused those wounds in the first place heal them?