I was really looking forward to this, but I ended up disappointed. I listened to this on audiobook and I don't think that helped. The translated prose is extremely redundant and clunky.

We had to hear the rules about time travel at least 5 times, but it felt like 50.

For an already short book, it feels like it could have been so much shorter. The characters felt like one-dimensional cliches and 

each trip to the past resulted in the most predictable outcome. I don't mind things being predictable in general, but there was so little substance to make it worth reading.

I love the idea of the premise, but it felt like a drag the entire time.

Mildly disappointed there is no cat in the book despite there being one on the cover.