Well, it's not easy to say off the top of my head. Different manga series might number their chapters differently for the Shibuya Arc. You could try searching on manga-specific websites or asking in manga communities for the accurate chapter.
Well, it's a bit hard to keep track precisely. Different sources might have different updates. But you can usually find the current arc mentioned on manga-related websites or social media groups dedicated to JJK.
I'm not entirely sure as it could be a specific visual novel related to Shibuya. It might involve stories set in Shibuya, with characters experiencing various adventures, romances or mysteries in that location.
Well, one that stands out is 'VA - 11 HALL - A'. It has a unique art style and the story is set in a cyberpunk - ish Shibuya - inspired world. You play as a bartender and interact with all sorts of interesting characters. The dialogue is really well - written and it gives you a great sense of the place's atmosphere.
It could be about various things. Maybe it's set in the Shibuya area and the scramble crossing plays a significant role in the story. It might involve characters whose lives intersect at this famous location, with different plotlines like romance, mystery or personal growth.