Recently, Charming Empire got released on Steam. The game is a otome dating visual novel set in the Aisho Roman era Japan. Also, it's the port from the original mobile version. Current special 20% off release price is $23.99 or ¥2613.83 until April 25. For more details, check out the store page. Here's a trailer.
Official Website: http://teikale.operahouse.co.jp/