The story revolves around D, the infamous "dhampir" (born of a vampire father and a human mother) outcast and renowned vampire hunter. His prowess at hunting the creatures of the night allowing his acceptance among humans, he is called upon to locate Charlotte Elbourne, the lovely daughter of an affluent family who has been mysteriously kidnapped. When the sun sets, the hunt goes on! Charlotte's father offers a rich bounty, be she dead or alive, a task D willingly accepts, even with notorious Markus brothers and their gang of bounty hunters seeking the prize as well. Amidst the chase and unknown to all lurks, a sinister evil which has been secretly manipulating their every move and has set a chilling trap that none will expect and few will survive. With the tables turned and the secrets revealed, the hunters could quickly become the hunted! (Source: AniDB)

The Rift between the present world and the another world caused by the instability of energy is the only passage to the present world for the monsters in another world. In order to block the invasion of monsters, in the present world, a group of people with special power bravely stand in the Rift to defend the world.

Murai is a second-year student at Takebe Gakuen High School enrolled in the college preparatory course. His homeroom teacher, Tanaka, summons him to her office after he declares that his post-high school plans are to marry her. Tanaka rejects Murai, telling him that she would never be interested in a boy with long, black hair. Secretly an otaku, she has eyes only for Hitotose, a character from an otome video game. The next day, Murai appears before Tanaka a changed man. Having cut his hair short and dyed it blond, Murai looks exactly like her beloved Hitotose. Tanaka is unable to hide her shock at this sudden development and tries to distance herself from Murai, while Murai presses on in his attempts to romance his teacher.

Entranced by surfing and the sea, Hinako Mukaimizu is a spirited girl who attends college in a coastal city with no consideration for her future career. Her life takes an unexpected turn when a fireworks mishap sets the apartment building she lives in ablaze, where she is saved by a talented firefighter named Minato Hinageshi. Upon meeting, the two quickly become acquainted with one another—Hinako is instantly enamored by Minato's reliable personality and passion for saving others, while Minato is intrigued by surfing and is eager to learn how. As Hinako begins to teach Minato about surfing, the pair eventually fall in love and begin a gentle and devoted relationship. However, while surfing may seem fun and carefree, it can still be a dangerous and unpredictable activity. This is what Hinako learns when a surfing incident completely changes her life, leaving her forced to contemplate her undecided future. In search of her own calling, Hinako begins her journey of self-discovery, keeping Minato by her side as she gradually attempts to find her purpose and ride her own wave.