Good start to an interesting idea, and it’s good up to about 3/4 of the story, then it goes downhill unfortunately. A genetically engineered soldier from a technological culture crashes on a magical world. Isekai scenario. He uses his advanced technology to defeat the various magic things, and the magic system gets a pretty good explanation. He then proceeds to hack the magical system, although that isnt developed as much as it could be. So far so good, but then the story progresses and I won’t spoil it for you, but the main problem is that the remaining 1/3 of the book feels rushed and ideas are not developed but instead just happen at a breakneck pace. My biggest issue though is that the ending is a real bummer, which is a logical way to end the story, but again feels rushed and doesnt do the story or character any justice. What a disappointing end to a good start.