@MaDDanieL, Shika no Ou: Yuna to Yakusoku no TabiОлений король: Обещанное путешествие с Юной - на novel updates у оригинала стоит тег ninjas: www.novelupdates.com/series/the-deer-king/
И догадываюсь, почему:
>Hossaru with the support of an influential nobleman in the imperial administration sends out a tracker from a village of basically ninjas (I've forgotten what they're called in the book)
japanesebookshelf.blogspot.com/2016/06/the-deer-king.html