https://www.microsoft.com/store/apps/9NBLGGH5N200
A plain and simple book reader app on Windows 10 UWP.
本棚機能付き読書アプリ
New version is released.
As new version has different user experience, it is released as new app.
Q: How to add books to bookshelf?
A: Click on the folder icon at bottom.
Q: How to enter secret mode?
A: Right tap on "about".
Q: How to zoom with mouse?
A: Crtl + Scroll.
Q: From where did you get books displayed on screenshot? Is it legal?
A: Here. It's legal. "英語版" means "English version" by the way.
The screenshots are not in this repository because it's not compatible with MIT License.
j-comi also provided some free PDFs but not anymore.