On the two-year anniversary of the death of his mother, Masaki Kuzumi returns to the beautiful manor home where she once lived. There, he meets the kind, devoted dog trainer Yuu Kanai and instantly responds to the younger man's sweet nature...but something behind Yuu's smile hints at a secret darkness that Kuzumi knows all too well. Can these two men band together and shine the light of forgiveness on all of their past regrets?