I decided to withdraw from the services of Google AdSense and Amazon Associates. In other words, Koryuen no longer contains ads (sponsored links) via Google and Amazon affiliate links. The withdrawal is mainly because they did not yield enough profit for me to enrich the contents of Koryuen. The ads in particular were also off-topic from what I really want to convey through this website, while being a mere distraction for the visitors. I hope you enjoy the Koryuen without the interruption of those links!
Komada Makiko
