Prince Herscherik and The Kingdom of Sorrow

Prince Herscherik and The Kingdom of Sorrow summary:

The day prior to female otaku Hayakawa Ryouko’s 35th birthday, she departed the world in a traffic accident. Then, she was reincarnated in a fantasy world. Not to mention into a blonde-haired, green-eyed beautiful Prince of the largest country in the continent.
He fully enjoyed the life of a Prince as if he won in a lottery, but the county is actually in a considerably bad situation – the retainer despises the King, the n.o.bles are tyrants, the government officials are corrupt and so on.
To protect his Father King and to save the citizens, the reincarnated Prince Herscherik decides to fight against the country’s darkness.
However, the Prince is physically weak and has no magic. To make matters worse, he was named the ‘disappointing prince’ who despite being beautiful, couldn’t hold a candle to the members of royal family.
But the Prince did not give up and made use of his skills as an office worker in his previous life, including his natural ability to take action (otaku-like) and his intellect.
Thus, he will start to rise up now together with his allies.
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Volume 1 of Herscherik (Reincarnated Prince) Series