The Sumo Wrestler by Ben Stevens is intriguing. I gave this short book four stars.
Sumo wrestlers have always fascinated me. Kato was a wrestler who rose the sumo ladder fast in spite of arrogantly disregarding tradition.
I received a complimentary kindle copy in an Amazon promotion. That did not change my opinion for this review.
Link to purchase: https://www.amazon.com/Sumo-Wrestler-Ennin-Mystery-33-ebook/dp/B00TQE7V62