I am Sophia. The Tsarevna

A storm is gathering over Rus once again: the Crimean Tatars are raiding, the Turkish Sultan is preparing for war, and the boyars are weaving intrigues…
How can one remain indifferent? Sophia, the beloved sister of Tsarevich Alexei, simply must intervene. A new bloody battle awaits, where the Russians and Poles must stand shoulder to shoulder against a common enemy. To survive. To win.
And to help both her brother and her homeland, she must take on the heavy burden of responsibility – to build ships, organize arms production, and establish relations between Rus and its neighbors… Could an ordinary tsarevna handle all this? But is this burden suitable for a woman from the future?