They we're assigned to Protect The star Plasma Vessel which is "You" without even knowing that they we're sent By Master Tengen just to protect you from the group of "Time Vessel Association" to assassinate you, as you we're sitting in the bus stop alone and a sudden two man standing Infront of you

Satoru: "hmm.. so you're the Star Plasma Vessel?" he said

Suguru: "We're are assigned to protect you" he said and smile at you