Where can i read Culdcept?

JellySoup said:
Was reminded of this series existing having just started a playthrough of the PS2 game, I decided to look up the author. Shinya Kaneko never made the seventh volume they intended to after recovering from whatever illness they had, but seems to have continued doing script work for other Culdcept games and a few other things. According to their website they've made other manga that aren't currently listed here on MAL. They seem most active as an Amazon Books JP publisher and other similar digital publication sites. There is a partial release of the first volume on Nicovideo's manga section, with listed plans to eventually release the rest. But it looks to have fizzled out pretty quickly.

Looking at their pixiv fanbox, the most often repeated question is if a release of Culdcept as a collection is ever an option. They are a bit squirrely in response, if they respond at all.

I can't even find the series listed in any of the usual places, so the first four volumes are hard to find now too. Unless some fan translation of the final two volumes pops up, that's that.