Kroju

Could you clarify what Kroju refers to? It could be a place, a person, a term in a language, a cultural practice, or a fictional concept. Providing the intended sense (and ideally a region or sources) will allow me to write a concise, neutral wiki-style article under 300 words. If you’d like, I can also create a neutral stub for a fictional use of Kroju once you specify the context.