Five years ago, all but one of the inhabitants of Ootsuka village perished due to the plague… but the lone survivor wished only to follow her two dear friends to the grave. To prevent the death of the people who were like family to him, one of the dying boys used his last remaining breath to agree to a proposal put to him by a mysterious fair-haired man. Miraculously restored to health, the trio have since sought refuge in a church near the adjoining village. Eventually, the Imperial Church begins to express its interest in possessing "Murasame", the demon blade rumored to contain life… but what connection does this legendary sword have with the three survivors of that devastating epidemic?

Haru visits Canada to spend the summer holidays in the woodland house of his strict, strong-willed mother, Haruko. There, she burdens him with the responsibility of caring for his younger adoptive brother – a wild and unruly little boy named Ren, who trusts no-one and who prefers to wander in the woods with Haruko's dogs rather than associate other people. Haruko orders Haru to "civilize" Ren. As the young man strives to teach Ren how to live in human society, their relationship gradually improves – so much so that Haru plans on taking his "little brother" to Japan with him once he finds a job. Unfortunately, fate has a cruel habit of interfering with one's plans… ---

Murakami Keisuke possesses beauty which cannot be missed. Many people admire him due to his beauty, but he has never accepted any one of these people. One day, student council president Masaki, due to some incident, started to become close to him…