Aselia the Eternal is available at JAST USA,
and also carried by the following retailers:

System Requirements

OS Windows 2000/XP (Vista and 64-bit Windows pending)
CPU Required: Pentinum III 500MHz or better
Recommended: Pentium III 800MHz or better
Memory Required: At least 128MB / Recommended: 256MB or greater
Hard Drive At least 1.2GB of free space. 1.8GB required for full install.
Graphics 640x480 resolution and 16bit colors required.
8MB video memory required, 16MB or greater recommended
Sound DirectSound and PCM required
Other DirectX 9.0c, Direct 3D required