Other Sotsugyou M stuffs :voice message cds
These are the weirdest things on the planet. :S They're a collection of random messages recorded by the seiyuu as the character, such as answerphone messages, wake-up calls, congratulations messages, etc. They were sold as ボイス・メッセージCDs (Boisu-Messeeji, or Voice Message CDs).
They're on mini-disks, like the Characters Special CDs and they're...random. But they exist, so we'll go with it.
There is one for each of the characters, but they're not easy to find. You have to scour the Japanese second hand market and then know what you're looking for. I recently acquired Nakamoto's CD so I will be adding a picture of that (and maybe a soundbyte too) in the near future.
Here is a brief sample of the kind of thing these CDs contain. This is taken from Yuusuke's disc. (Before you click this, turn the volume DOWN on your PC. If you don't, I'm not responsible for the consequences!)
The boys also released "group love message" CDs. Er. No, I haven't got this. I haven't ever seen it online, either. But I imagine it might be rather scary. I think I'm going to go order some armour to protect me from Yuusuke now...if he gets that excited just announcing wake-up calls, congratulations and answer phone messages, confessing his love to someone might just kill them...