If you're looking for manga similar to Ai no Joou, you might like these titles.
Louie is the charismatic mystery man who creates merikuron, replacement bodies in which even memories are duplicated. Is the mysterious young man who creates them, Louie, a god or a demon...!? A poetic human mystery that will move you to tears.
The story about Yuki, the girl who lost all of her memories, because of a traffic accident when she was 17-years-old.
Tachibana Yuna was forced to return to her hometown due the death of her husband and lived miserably. Right after she thought she was lucky enough to be remarried with Japanese famous Painter named Aoi, some dark truth hidden behind his intention of making Yuna as his bride...
For an unknown reason, 13-year-old Aki Kasuga seems to have killed her parents when she was found by her younger sister and detective Toru Takahira at the crime scene of lake Ezu near the Kumamoto city. As a minor, the girl joins a reintegration program and changed her name; from now on living as Sei Kamihara. Six years later, a new crime takes place in Ezu, and this time it's a little girl who dies. A week later, several species in the zoo are found dead. What is the common thread of all these mysteries in Kumamoto?