Recently, Nightshade／百花百狼 got released on Steam. The game is an otome visual novel about Ninjas in the Sengoku Period setting. Current special 20% off discount release price is $27.99 or ¥3040.83 until April 18. For more details, check out the store page. Here's a trailer.
Official Website: https://www.d3p.co.jp/hyakka/steam/