Haru to Kaiya

The protagonist heads for a mansion in the mountains after receiving a message requesting aid from Yukie, who they've felt indebted to since middle school. There, they are awoken by a girl named "Haru" at the entrance, then gradually come face-to-face with the terrifying truth behind the mansion... [From [url=https://store.steampowered.com/app/3813660/]Steam[/url]]