If you are a beginner in English, it will likely be quite difficult. However, if you are really interested in the Violet Evergarden story, you can start with easier English materials first and gradually work your way up to reading this novel. You can also find some simplified versions or study guides related to the novel to help you understand it better.
It depends on your English level. If you are proficient in English and are used to reading novels, it may not be that difficult. The language in it is generally well - written and engaging.
For intermediate English learners, it could be a bit challenging. There might be some complex sentence structures and vocabulary. But it's also a great opportunity to improve your English skills while enjoying the story. You can use a dictionary while reading to look up unfamiliar words.