From GameWatcher: “Demon 44 is one monster that will give Bloodstained Ritual of the Night bestiary completionists a bit of a headache. Not only is it difficult to fight, defeating it by traditional means isn’t the easiest thing to do.
Here’s everything you need to know about where to find Demon 44 in Bloodstained Ritual of the Night.”
Source: N4G PC Bloodstained Ritual of the Night Demon 44 Location Guide