A Useless Swordsman Should Also Be a Savior

Nagano Hao traveled to the end of the Tokugawa period, and his parents were forced to commit seppuku by the shogunate for supporting the end of the Seclusion. Nagano Hao changed his name to Uchiha Hao after joining the Natural Rishin-ryu. He met the talented female swordsman Okita Souji, and obtained the "Yugio King" system. He grew up step by step, exchanged props in different games and became the savior of the contemporary era! (It is not completely counted as a fan of Xingyue. In the early stage, there were only characters from Xingyue, but in the later period, there will be other IPs. It can be regarded as a hodgepodge)