- The manga adaptation.
- The Japanese TV Drama adaptation, with Hiroki Narimiya as the leading male character.
- The Japanese movie adaptation.
- The US movie adaptation, rumoured with Jennifer Garner as the leading female character.
I will call this the "Be With You" project, planned to be completed in 2009. Why is it so long, you say? Because the US movie adaptation is still in process, and hopefully it will be completed sometime next year. So I need to wait patiently until that time comes.