太陽の碧 (Taiyō no Ao) is Dir En Grey's tenth single.
- The initial release came with a glittering cover.
- A promotional VHS with this name was also released at an unknown date. It contains the title tracks of all three singles released in 2000, as well as a remix version of 脈. Why the title track is included twice is unknown, but it might be a PV.
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