Mayumi is a girl who lost her parents in a car accident; unable to deal with the overwhelming sadness, hatred and anger, she wishes only to be able to stop feeling altogether. Five years later, the now 18-year-old Mayumi's sister is the first victim in a series of bizarre incidents that involve people receiving text messages indicating a certain body part, immediately after which said body part is removed - painlessly and without blood loss - from their body and disappears completely.

Ayu, a 17-year-old high school student, believes neither in a future nor the happiness it could bring her. By selling herself, she tries to justify her existence, which is as bleak as her heart - it’s devoid of joy, sorrow, love. Not until her encounter with a kind-hearted old lady does Ayu begin to realize the true meaning of happiness…

Being abandoned by his owners, having his mother die of starvation, a puppy who suffered lifelong separation from his siblings wandered around the city. Meeting and parting with kind people, experiencing brutal treatment from unjust people. Pao, who learned to live within the harshness of reality, awaits even more ordeals…

The continuation from Deep Love - Ayu no Monogatari. This story is about Reina, a cheerful 19-year-old single mother. During Ayu's Story, Reina was raped in a Karaoke bar and eventually gave birth to a baby girl she named Ayu. Now, Reina has fallen in love, but what will happen when she tells him about her daughter. Events quickly spiral out of control as this young mother falls deeper and deeper into despair.

The continuation from Deep Love-Ayu no Monogatari. This revolves around Yoshiyuki, the lad who was in need of heart surgery in Ayu's Story. After Ayu's death, it seems that Yoshiyuki wants to learn anything, everything. And thus he tries out for a job as a host and says that he's willing to sell his body…