Can Do Trien received the honor bestowed by the Koka City Police Station on November 16, Japanese news site asahi reported.
Trien, 35, was walking near Daichi-ji temple in the city on October 22.
As he passed by a swamp, he saw an old Japanese man raise his hand for help.
Trien couldn’t get the man out himself. However, since he didn’t speak Japanese well enough to tell others what the situation was, he took a photo of the old Japanese man with his smartphone.
He then ran for help, finding two high school students.
He showed them the photo and they immediately called the police hotline.
After making the phone call, the three rushed to the old man. Together they held his hands and calmed him down while waiting for help.
Firefighters arrived soon after and pulled the 80-year-old man from the swamp.
According to the Koga City Police Station, the man’s injuries were not life-threatening.
They also said that it was the first time they gave a letter of appreciation written in Vietnamese.
Trien is from Hanoi and came to Japan in 2018 after an in-house technical training program.
He currently works at Yatsushiro Seisakusho, a metal processing company in Koka, and the day of the incident was his day off.
Trien was actually walking around taking pictures of the landscape in Japan and sending them to his eight-year-old daughter and five-year-old son in Vietnam.
As expected, he will return home by the end of the year.
According to the Japan Immigration Service Agency, nearly 433,000 Vietnamese currently live in the country, accounting for 15.7% of foreigners in Japan.