I Traveled to the Showa Era and Sold Insurance, and I Became Emperor Yamaguchi.

In 2025, Song Jian died in a car accident. His soul traveled to 1930 and became Yamamoto Ken, a down-and-out young man who was about to interview as an insurance salesman. "Ding! It is detected that the host is on the Showa era train, and the [Showa Heroes Sign-in System] is successfully bound!" "Ding! Signing in for the first time, congratulations to the host for obtaining [God-level speaking skills], [Novice Fund of 100,000 yen], and [Fighting Master Proficiency]!" Facing the difficulties of the cold female director? [God-level speaking skills] was so shocking that she was speechless and accepted her on the spot! Sleeping in a park penniless? Backhandedly, he met the future Yamaguchi-gumi third generation, and the [Fighting Master] showed up. No deal could be made without a fight, and he was accepted as his younger brother on the spot! Starting out as a trainee salesman, Ken Yamamoto made waves in the financial world during the day and built a business empire; at night, he strategized in the Yakuza and became the uncrowned king of the underground world. When his name resounded throughout Japan, everyone was horrified to discover that in this era, his surname was already "Yamamoto"!