He had to plan this carefully.
Kenjaku waited to ensure Sukuna was alone when he left to return back to the Hida province, but then, he made his move.
Throughout the years, Kenjaku has been rather good at making sorcerers die a certain way, mainly, to keep the body intact. But every so often sometimes damage needs to be done.
But not this time.
Kenjaku knew who his target was, and he will be certain to use it to its full potential. After all, it appears Ryomen Sukuna looks up and greatly respects this Mother Tooru he speaks of.
He made certain to keep himself hidden and out of sight, a technique he managed to get from the old man he possessed a few years ago before gaining a Tooru body. He has the ability called 'unsightly'. Those who have seen him, soon forget his appearance and second guess themselves if he was even there in the first place. He used this to get into the region and keep out of sight of the Toorus, for even he has doubts that this technique would get pass them.
He spent his time observing, watching and seeing if there was a pattern to all of this. Yet, in his travels and observations, he became startled by one.
The man Sukuna called 'Father Tooru'.
The man was a little older, but, Kenjaku never forgot this face.
This was one of his test subjects. The one he made go blind, and yet, his perception of the world was second to none!
"He lived?" He whispered to himself, and found by this clan of all clans! What worth did they see in him?
And yet, Sukuna, he spoke so politely before him. The respect he displayed was fascinating and yet at the same time revolting to Kenjaku. Why did he respect this sorcerer?
It didn't matter, there was now a backup body he could obtain… then again, he doesn't know if he could correct this blindness if he does take control of the body…
Perhaps the mother is more acceptable.
Either way, he made his plans and knew the best method to taking them out would be simple.
Poison.
Sorcerers, despite their abilities, they are not immune to poisons… well… not ALL of them anyways. Kenjaku has dabbled in some, and one he knows will work for certain is going to be the key to his success. Despite one Tooru among them knowing of such toxins, this one not even he will be able to correct, for Kenjaku created this one himself.
Not to mention, that Tooru was assassinated recently… the family has yet to notice no doubt.
It took years to perfect, but it's one of the best solutions he has to obtain a body, for this poison turns curse energy against the sorcerer, their energy becomes their downfall and the more they have, the sooner it takes their lives!
He had to be cleaver with it too. After all, if he does this too bluntly, the village will be on edge, no one would be permitted it nor be trusted. He needs to still have that opening for later, so, he did the next best thing.
Shikigami.
Kenjaku was able to make a wasp shikigami, very unassuming at the same time, can conceal the poison within. He was able to make two with his skills and sent them on their way to their targets.
They were able to strike without suspicion… at least. He thought so.
Lingering about, outside of the village he was able to hear what went on through other means. Mother and Father Tooru were dying, and the poison was spreading faster and faster as the hour passed.
They were dead within 24 hours.
Kenjaku smirked, the Tooru family likes to take their time to mourn their loss…
But then he saw the pyro fire.
Intense curse energy suddenly erupted in the middle of the village, the family began to sing an odd and yet haunting melody…
When he found out what was going on, Kenjaku wanted to curse this family to death!
Mother and Father Tooru were cremated instantly!
"What on earth are with these sorcerers!? It as if they knew…" he muttered lowly.
This was becoming rather frustrating to believe, let alone understand. However, it made it all the more clear to him.
The Toorus have to die.
But the only one who could do it, is Ryomen Sukuna.
"It appears a new plan is in place. Let's see how well he does without the support of the parental Toorus…"