If you go to Kasai in the eastern suburbs of Tokyo for its fun subway museum, it's also worth exploring the area a few minutes north-east of the station. A little way past the end of the pleasant Shinsui Shiki-no-michi road, there's a quiet residential district with a tight cluster of around ten temples and shrines, some small and intimate, some larger and grander. It's a nice place to spend an hour poking around the different buildings and their grounds and variety of statues, and allows you to get a sense of daily life for the residents of Tokyo's outskirts.
I came to Japan from Manchester, England in 2003, and have travelled a lot since then, around Japan and in Asia. When I'm not working, I write satire and perform stand-up comedy in and around Tokyo. Check YouTube for a taste.