The Genbu constellation that had a lot popularity: Hikitsu and Tomite. Especially Tomite.
Why they were the only ones left is due to the battle that took place 200 years ago, where both felt on a trap and died at the begining. They were the strongest combination of the seven, but Tomite threw himself to protect a child, and Hikitsu, who treat him like a little brother,also sacrificed himself to cover him. That's how thay both die before the battle was over and the remorse of not been able of participate in it made them became spirits who ended up with the responsability of protect the shin za hou
I think the loyalty they felt for the Genbu priestess was amazing because both had a very honest personality.
Hikitsu is 21 years old, he looks cold but in reality is kind and passionated. He's 1.84 cms and he doesn't wear a eye-patch because his sight is bad, but becouse in his right eye is the kanji of Hikitsu.
Tomite is 16 years old. He's আরো like a rebel that a tough guy. When he's interesting in something. he put his mind on it. He's a very pure kid. He's 1.74 cms. The kanji is on the left side of his back.
The two of them were like brothers and Tomite looked up to Hikitsu like an older brother but everyone says that those 200 years they were alone in that cave were actually part of their plan...

Taken fron Book 10 of F.Y.