Reddit reviews A History of Christianity in Japan

You could consult these books. I cannot vouch for all of them because I'm getting these recommendations from the bibliographies of other books, but I believe they will be helpful for you because I am consulting the bibliographies of scholarly sources. You might consider finding them at a library if they are too expensive.

• "7. Christianity and the Daimyo" by Jurgis Elisonas, in the Cambridge History of Japan, Volume 4: Early Modern Japan, pp.301-72. This long chapter should surely give a good overview.
  
  
• The Christian Century in Japan, 1549-1650 by CR Boxer - this is an older work dating to the 60s, but is considered to be very good.
  
  
• A History of Christianity in Japan by Richard Drummond
  
  
• Deus Destroyed: The Image of Christianity in Early Modern Japan by George Elison - an impactful monograph on the beginnings of Christianity in Japan.
  
  
• "23. Christianity in East Asia" by R.G. Tiedemann, in the Cambridge History of Christianity, Volume 7. Covers the period beginning from the Tokugawa shogunate into the 19th century, pp.467-470.
  
  
• "30. Christianity in East Asia: China, Korea and Japan" by Daniel H. Bays and James H. Grayson, in the Cambridge History of Christianity, Volume 8 - this covers the 19th century. The section on Japan is rather short, comprising pp.509-12.
  
  
• Christianity Made in Japan: A Study of Indigenous Movements by Mark R. Mullins - this work looks unique because it tries to summarize Japanese Christian history through its reception by the Japanese rather than via an overview of Western missionary efforts.