Lyshiini

Could you clarify what Lyshiini refers to? Is it a real-world ethnic group, a language group, or a fictional/constructed group? If real, which region and time period are relevant? Do you want a strictly factual, sourced encyclopedia entry, or a concise overview suitable for a wiki without citations? Any particular focus (history, culture, language, distribution, notable features) you’d like included or excluded? Once I have that, I can draft a neutral, concise article under 300 words.