It wasn't just useful for surprise attacks. Shinji continued to explore the possibilities and realized that this dojutsu would also be perfect for escaping.
Suppose Yakumo encountered a powerful enemy and couldn't get away.
She could have Ido flee in Spirit Body form, then activate the dojutsu and switch places with Ido after she had escaped to safety.
Caught off guard, ordinary enemies wouldn't be able to stop Ido in Spirit Body form. Ido could easily escape by taking advantage of that form.
Of course.
All of this depended on whether Ido, in her Spirit Body form, could actually cooperate with Yakumo to activate the dojutsu. If she couldn't, then none of it would matter.
Shinji gathered his thoughts and used Naobi to give Yakumo and Ido the same instruction: "Try activating that dojutsu again!"
"But I just dispelled it..."
Ido had only gotten halfway through her sentence when she realized Shinji wanted to test whether she could cooperate with Yakumo to activate the dojutsu while in Spirit Body form.
She immediately understood that if she could activate the dojutsu with Yakumo in her Spirit Body form, the technique would become far more versatile.
Whoosh.
In an instant, Ido, who had been standing before Shinji in Spirit Body form, became Yakumo in her physical form.
"It really works."
Shinji was secretly astonished.
The success of the test meant Yakumo now had a Spirit Body that could freely set a teleportation destination anywhere within fifty kilometers.
If she used it well, she could handle both surprise attacks and retreats with ease.
And if she wanted Ido to operate farther away, all she had to do was give her a physical Blood Clone. That would allow for teleportation across extremely long distances.
As the thought crossed his mind, Shinji looked at Yakumo,