Hong Kong anime-pop-culture brand SUNRISEPOP teamed up with Japan's hololive production for "holonatsu Paradise" at Shanghai's Bailian ZX Creative Center — Shanghai-only merchandise (trading cards, acrylics, plush) for seven virtual talents. A Hong Kong brand, a Japanese IP, and Shanghai meet on top of a fandom.

Take away "SUNRISEPOP × hololive × Shanghai-only" and there's no story — the overlap of brand, IP and city is the whole thing.

Source: hololive production