If it wasn't because of it was listed among the DVDs and LDs of CD Japan's catalogue, I would not have not been aware of the VHS tapes! I was not able to find the catalogue number of the OVA, though. Since they are released in Japan, I can assume they are NTSC.

VHS tapes:

• Kakyuusei TV - Director's Cut Vol.1 - KSVA53728
• Kakyuusei TV - Director's Cut Vol.2 - KSVA53729
• Kakyuusei TV - Director's Cut Vol.3 - KSVA53730
• Kakyuusei TV - Director's Cut Vol.4 - KSVA53731
• Kakyuusei TV - Director's Cut Vol.5 - KSVA53732
• Kakyuusei TV - Director's Cut Vol.6 - KSVA53733
• Kakyuusei TV - Director's Cut Vol.7 - KSVA53734

The Kakyuusei Music Graffiti mentioned in the LDs' page was also released in VHS, but I haven't been able to track it's catalogue number.

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