Silmaris is a pretty interesting lightweight kingdom simulator with some fun storylines. It should take quite some time to dig through all the written content of the game, and once you get the hang of it, the dice part becomes less tedious. There are better options for story games on mobile, but you could also do much worse.

Silmaris - strategic boardgame and text adventures
PyroGen · Dec 22, 2019
About
Take the helm of the fallen city of Thylla and restore the lost power of your kingdom by subduing the other monarchs in the valley.
Choose and use your advisors wisely to wage war or form alliances, develop trade and explore the world, or spy on your enemies and conspire to overthrow the other rulers!
Each new game features a different story packed with twists and turns. React to events and make the right decisions when fate thwarts your reign… and as you prepare to face the greatest threat the world has ever known!
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