Review Detail of r3dfear in Museum of Deadly Beasts

I really liked the story, although the plot was a bit too predictable it was still a good read. The only downside is that the author began to speed up too much after the immortals' saga, for example it took MC 500 chapters to upgrade his breast from rank 1 to rank 5, yet the hardest ranks, eg 6,7,8,9 only took 300 in total.