Keiji, Furidashi ni Modoru Episode 1

Nicknamed "Mobu-san", Hyakutake Makoto is a detective working at Furuta Station at Yamanashi Prefecture. Ever since losing his girlfriend, Saeki Misaki to a tragic ten years ago, Makoto has been living lifelessly while witnessing his co-worker, Yoshioka Takashi climbing the career ladder smoothly.One day, while chasing a violent criminal, Makoto is shot at the scene and wakes up to find himself back to 2016. Not knowing what will happen, Makoto is determined to use his decade worth of experience to protect his beloved and change his own fate. However, while doing that, the dark side of the police organisation is slowly revealed.(Source: DramaWiki)