In the Shamshera original story, one of the main themes could be the struggle for freedom. Shamshera may be striving to free his people from the shackles of a tyrannical regime. Another important theme could be identity. As he goes through his adventures, he may discover who he truly is and what his purpose is. Additionally, loyalty could be a theme, as he might have a group of followers or friends who are loyal to him and vice versa, and this loyalty is tested during their battles and hardships.
Possible main themes in the Shamshera original story could be heroism and the fight against oppression.