I'm a Coward, Traveling to Ancient Times to Solve Crimes?

The male protagonist Han Shenzhi is a modern high-IQ talent with high IQ but social phobia. He likes reasoning in his spare time. He accidentally traveled to Han Shenzhi, an official in charge of investigating cases in ancient times. He has caring parents and a quirky younger brother Han Jingyu. In a case, he met a clever and smart man. The kind-hearted and beautiful heroine Shen Xiaoxiao, the two experienced various bizarre cases together, and they fell in love with each other over time. The hero's personality also changed from social fear at the beginning to confidence and bravery in the adventures. After experiencing various cases and experiencing various human natures, he became more determined and wise, broke through himself, and finally gained true love.