I don't know who wrote the summary to this manga, poor Louis XV was totally forgotten xD
All those summary facts though can't relay even 1 percent of drama that is going on with this manga. Manga itself is built on existing documents like memoirs of Henry Sanson (he's Charles' grandson) and others. If you read 4th volume notes, you will get all the information you need to know what sensei used as his basis. To be well-prepared on this topic at least a little bit, since I came to deeply adore this story, I read memoirs of Henry Sanson and other documents and I must say, though in general it looks like interpretation of sensei, it's still portrays many events that really DID happen in real life closely enough. After all you can't expect manga to be absolutely historically correct, can you? 🙂 That would be boring.
Secondly, to represent the atmosphere of those times, let's not forget that everything back then was nowhere near how we live and communicate now, including manners, way of speaking and etiquette (that's what sensei told himself, I'm sure anyone will get the same answer from him if they ask him a question on his Instagram) he draws things that way, which may seem a bit theatrical and dramatic he said that he finds it important. With what I cannot but agree.
And last, but not least - Charles-Henri Sanson. I'm sure if you carefully start reading this manga you will come to appreciate it. Charles was born into unusual family and had to bear everything that comes with his family's past into his own future. His situation, where he doesn't really have a choice but being an executioner, was hurting him to no end, because his whole being was against it. His personal struggle continues and he has nothing left but make decisions that will form his own future. Sensei doesn't portray work of executioner one-sidedly, he perfectly shows executioners, prisoners, crowd from all angles to his best abilities.
And art. No need to mention that Sakamoto-sensei is a genius, his art is on such high level that it takes hours to simply appreciate beautifully drawn panels. But 🙂 What I really want to thank him for is that he doesn't make this manga in a plain gore story, no, he takes it to a different level. He often uses something metaphoric to represent this or that action or something that is happening. Like pomegranate blowing up instead of skull, sword against a statue instead of vertebra etc. It doesn't happen all the time, but he uses it from time to time and that eases the reading process, but that's a personal opinion 🙂