Usada Pekora is a Japanese virtual YouTuber from hololive's third generation, a rabbit-themed performer whose energetic personality has built a large international audience. Her Polish greeting, Dzień dobry, meaning good day, has circulated among fans as a short, shareable hello that bridges her Japanese streams with Polish-speaking viewers. Because it is brief, instantly recognisable and easy to drop into edits, it remains popular for stream openings, fan videos and playful morning messages across VTuber communities.