Shadow Corridor / 影廊 is a japanese horror game developed from KazukiShiroma. This game contains randomized dungeons and the goal is to collect Magatamas and to avoid the "Noh mask"-monsters.
If you beat all regular dungeons on diffucult setting and collect all golden Magatamas, you are able to go to the Sanctuary. There, you meet Higana. Higana is Hibanas twin sister. After a conversation with both you have the chance to see the true ending of this game. We encounter the same boss like in 'Distended Hate' but this time, this is really a bossfight with two forms.