I enjoyed it as an opportunity to ponder the value of experience, routine, and what it means to become an expert.

This book felt very similar to [b:The Forever War|21611|The Forever War (The Forever War, #1)|Joe Haldeman|https://d.gr-assets.com/books/1386852511s/21611.jpg|423], another military sci-fi using time manipulation as a device to examine the development of personality through war. Although it shares a premise with Edge of Tomorrow the movie, the character development and conclusion are completely different, similar to the difference between [b:The Children of Men|41913|The Children of Men|P.D. James|https://d.gr-assets.com/books/1388271989s/41913.jpg|1142] the book and Children of Men the movie.

The translation is very idiomatic and does a good job of masking the Japanese source material, though the changes in pov and novel structure are clearly not traditional western sci-fi. Also, the characters felt robotically masculine in a similar to [b:死神永生|13314298|死神永生 (三体, #3)|刘慈欣|https://d.gr-assets.com/books/1340624983s/13314298.jpg|18520265], but in the genres of Asian sci-fi or military sf, it unfortunately comes with the territory. Or maybe I’m just more sensitized to it after working with [a:Sheryl Sandberg|5333595|Sheryl Sandberg|https://d.gr-assets.com/authors/1362172237p2/5333595.jpg].