I'd like to offer my services for proofreading/editing. I am a native English speaker and professional editor, and I have worked on a number of other VNs such as Meyaoi's Seiyuu Danshi and Ertal's games (all except the first one).
Hi! Thank you very much for offering your skills! We will stay in touch with you when it will be the time to hire (if, of course, the kickstarter is funded)!