"That day, if our positions were switched... Would our fates be different? Would I have your life, and you mine? Let's settle this... Komachi."

A few weeks before Halloween, Hachiman’s entire family is killed in a car crash. In a state of an emotionless breakdown, he cuts off communication physically and mentally. A visit from Yukino to notify that she’s being engaged with Hayato. And an eavesdrop of a conversation from his front yard. Hachiman finally decides to do what he thinks best.