A cemetery for KK

My daughter-in-law Kristina studies bones, and funerary customs, and grave goods.  When she travels, she seeks out cemeteries.  Here's one I stumbled on in Tokyo.

I can't read the inscriptions, of course, so I have no idea whether these monuments represent one person or a whole clan.  What struck me is how densely populated the place is.  It's also completely paved over.  There's no lawn to tend, nothing to tidy up.

Each monument has a couple of vases, and some have flowers.  In the corner, I found a tap and a group of charming wooden pails with dippers for watering the flowers.