Tsubone was the most senior butler in the Zoldyck Family.
Her strength and experience were both first-rate.
She also had a knack for tracking and counter-surveillance.
Yet this time, though she sensed someone watching her, she could not pinpoint where the gaze was coming from.
That led her to conclude that whoever it was must be an expert.
And whoever it was clearly knew who she was. Otherwise, they would have no reason to watch her every move here.
Tsubone suspected it might be an enemy of the Zoldyck Family—and therefore a potential threat to young Killua.
"Whoever it is, I need to identify them and find out what they're doing as soon as possible."
Tsubone watched the arena without betraying her concern.
To ensure Killua could train at Heavens Arena undisturbed, she could not allow any outside interference.
Far away in the spectator stands...
Moyu had no idea his actions had led Tsubone to make so many mistaken assumptions.
Once he learned Tsubone was the one protecting Killua, he was not particularly surprised.
After all, Tsubone was one of the Zoldyck Family's strongest members. She was certainly up to the task.
Having confirmed it, Moyu did not recall his shadow right away. Instead, he sent it out of the fighting arena to wait in a secluded corner.
Then Moyu got up and left.
Menchi's match against Killua was over, and he had no reason to stay and watch.
By the fighting arena's elevator...
Moyu waited for Menchi.
A little while later...
Menchi came to find him.
She wore a smile, plainly in a good mood.
"Master!"
Seeing Moyu waiting by the elevator, Menchi greeted him with her usual bright smile.
But this time, Moyu did not return it with his usual gentle one.
"You used Ren against an opponent