With Mrs. Kangaeroo celebrating another trip around the sun, we headed off Nikko to celebrate. Nikko is home to Toshogu Shrine, where the remains of Tokugawa Ieyasu, founder of the Tokugawa Shogunate that ruled Japan from 1603 to 1868. Mrs. Kangaeroo had never visited despite the shrine being a typical destination for Japanese school trips. I wasn’t keen, as Nikko is one of Japan’s prime tourist destinations, and I wasn’t looking forward to being surrounded by the hordes of vsitors that has most of the country moaning about “overtourism.” But Mrs. Kangaeroo loves celebrating her birthday, so I shut my…