Full Name: Jun'ichi Aikawa
Ranger Designation: Green Sai
Weapons : Sai Cutters

The younger brother of Mari and a rugby player. He calls Tetsuya "Tetsu-chan", looking up to him as an older brother. The youngest member of the team, temporarily leaving high school in order to fight Volt. While impregnated Vega Zuno, Junichi was fearful of the life inside him to the point of getting an abortion until the unborn Vega Baby pleas for its life and Junichi decides to "give birth," only to lose the child when killed by its biological parent and getting a newfound respect for mothers.