Books like Heart of the Sun Warrior
Sue Lynn Tan
Heart of the Sun Warrior is 480 pages, about 8 hours 48 minutes at 250 words a minute.
6 books to read next
How long each takes
The Poppy War 10.0 h 
The Fall of Gondolin 5.5 h 
The Dragon Republic 12.3 h 
The Burning God 11.7 h 
Oath of the Vayuputras (The Shiva Trilogy) 5.9 h 
The Empire of Gold 14.4 h Bar height shows length. Estimated at 250 words a minute.