A multinational OELVN (that's Original English Language Visual Novel) studio that gained infamy in 2014 when they released the game Sakura Spirit on Steam. It may be hard to believe nowadays, but Steam used to have fairly strict quality control, so the listing of a fully-fledged ecchi VN surprised many.
As of September 2026, they have made fifty-seven additional Sakura VNs since, so to say they found a niche might be underselling it.