Webnovel Author: Atmanium_studios - Fanfic Collection

It initially adheres to the power system established in Akame ga Kill with the Imperial Arms being a focus through most of volume 1. Raizo initially gains his own Teigu, Indra´s Judgement, an extract type Teigu similar to Esdeath´s teigu but themed after the power to control electricity. However, as the original lore is expanded and newfound means of power progression are unveiled through late volume 1 and into volume 2-- Raizo and other characters inevitably gain new powers and weapons. Not going too in-depth here since spoilers would be required, but the tl;dr version is that since the plot introduces new lore, characters, other worlds beyond the original AGK setting, etc we circumvent the limited Teigu number by expanding on the original power system and eventually introducing new systems and plot elements later on.

The initial goal of the character is very much a straightforward ideal of vengeance against the individual who sold out his clan. This has some obvious surface-level similarities to characters like Sasuke. However, that single-minded worldview is very quickly challenged as the world & characters that Raizo must face grow more and more complex both in power and motivation. At which point the initial goal of vengeance is no longer enough for the character to prevail and Raizo's ideals must then grow and be reforged. It's a very bleak story early on with plenty of bloodshed and dark moments, but that's by design as the overall plotline slowly transitions from "Raizo's revenge quest in an unforgiving world" to "The quest of an unyielding crusader fighting against the corruption of the world and protecting his newfound allies in Night Raid". So ultimately I guess you could say there is a bit of Archer in there too in the sense of strong ideals being forged and challenged throughout the story. As for the second part of your question—volume 1 "Crimson Rebellion" adheres to the Akame ga Kill! canon pretty extensively. Though obviously new characters and battles are added so it is very much its own "route". From volume 2 onward the story goes in its own route fully with the addition of an original third faction beyond the Empire and Rebels as well many other characters and plot elements that set up a wider inter-connected multiverse.

Nah it's not a reincarnation story. As for harem stuff—there is regular romance in volume 1. However there are harem elements deep into volume 2, but the main character has to go through a lot to earn that. So basically don't go in expecting a harem from the start.