Seiran Island. Even here in paradise, there are those who work in the shadows to bring it down... Confront the tyranny of a twisted system in this long-awaited visual novel adventure.
NIKITASHI releases today on Steam. Seems to review well it got 9/10 on Noisy Pixel. Seems to do decently on vndb too.
It's a shame, because Sol Press published their releases without DRM. Shiravune, which is a division of DMM Games, appears to have acquired the English language translation rights and localized it. They published this on Johren, encumbered by some of the nastiest DRM on the market.
On Steam, there's no mention of DRM, so it's possible it's only using the lighter Steamworks DRM. They've released a free adult content patch on Johren for Steam users. The other thing is that there's no Japanese language option with this release, unfortunately.
There is a checkbox setting in the admin settings panel to toggle NSFW on a per-instance level. I don't really mind so long as it's appropriately tagged.