Kyosuke Jinrai is Rescue Force's R2, wearing silver armor. His personal vehicles are Core Saver (later upgraded into Core Diver), Rescue Saver, and Rescue Diver.
Korean name: 카이 (Kai)
Rescue Force
Personality and Traits
Kyosuke is usually the most sensative. He's usually shown to be cheerful and easygoing. However. he's always willing to succeed in completing rescue missions. Sometimes, he can get jealous when someone else (like Hikaru) gets some privileges.
Relationships
Hikaru Todoroki
Kyosuke is Hikaru's sempai. There were some things Hikaru has that Kyosuke envies including the first to drive a large-scale vehicle and being Rescue Max's head. Either those privileges temporarily come true, or Kyosuke just accepts the ways.