The problem
Manga readers usually trade privacy for convenience. Libraries live in someone else's cloud.
Mitsu keeps the collection and progress on the machine that owns it.
A local-first manga library and reader. Import CBZ, ZIP or folders, keep your progress, and never send a page to a cloud you did not ask for.

Manga readers usually trade privacy for convenience. Libraries live in someone else's cloud.
Mitsu keeps the collection and progress on the machine that owns it.
Import once, read anywhere offline. Progress stays local, sync is opt-in.
The interface stays quiet: library first, reader second, settings last.