5 - Qmanga

If you are still using the older version, here is a direct comparison:

Verdict: If you are happy with QManga 4 and it still works, you may not need to upgrade. However, given that the source for version 4 was shut down in March 2025, QManga 5 is the only version that currently supports active libraries. If you are still using the older version,

QManga 5 includes basic library management tools, distinguishing it from simple image viewers. Qmanga 5 begins in medias res at chapter 27

Qmanga 5 begins in medias res at chapter 27. There is no chapter 1. The protagonist, a salaryman named Rei, wakes up on a train with a nosebleed and a note that reads: “You have already read volumes 1-4. Do not attempt to remember them.” The manga then proceeds to reference events that never occur on the page—a duel in a rain-soaked pachinko parlor, the death of a sidekick named “Mimi-chan,” a secret treaty between the Yakuza and a sentient vending machine.

The reader is forced into a state of perpetual déjà vu. Every panel implies a history. Every line of dialogue is a callback to a joke you never heard. In one breathtaking spread, the characters break the fourth wall to discuss the “terrible pacing of volume 3,” while volume 3 does not exist. It is a narrative ouroboros eating its own missing tail.