Red's rant: I think many Spiral Brain CG sets are missing. You can find them on DLsite or DMM: https://www.dlsite.com/ecchi-eng-touch/circle/profile/=/maker_id/RG08843.html https://www.dmm.co.jp/dc/doujin/-/list/=/article=maker/id=24902/media=cg/ Please buy them and share them with us so we can TL them for you :)
We are always recruiting editors, translators and proofreaders for EHCOVE. If you are interested, come by the Cove of Translators in the forums and introduce yourself. We also accept credit and hath donations (PM me for how to support us!).