After leaving Kushina's place, Akaseki felt a weight in his heart.
Minato treated everyone to ramen, saying it was an apology to Hikari. Though surprised, Hikari gladly accepted...
Ranwu still didn't understand what he was apologizing for when nothing had happened, but she could tell Akaseki had something on his mind, so she made a point of keeping him company over a bowl.
After the meal, Akaseki didn't go to the training ground. Instead, he took Hikari back to the clan grounds.
Only once no one else was around did Akaseki speak. "Kushina only knows Sealing Techniques. There are plenty of ninjutsu she might not understand, especially something as advanced as space-time. We should wait until we see that married-in son-in-law and ask him."
"I thought you'd be relieved," Hikari said with a hint of sarcasm.
Akaseki ignored her...
That's just how we of the Uchiha Clan are. We never openly accept anyone's kindness. Even if she refuses to acknowledge the Uchiha name, she still has Uchiha blood.
"And I thought you hadn't understood any of it, either," Hikari added.
Akaseki: ...
That's going too far. Not everyone in the Uchiha Clan has such a sharp tongue!
Indeed, Akaseki had just learned a few things about Hikari's condition from Kushina...
The problem most likely to arise when sealing a living being with a space-time seal was space-time displacement.
It worked on a principle similar to the Summoning Technique. Though the Summoning Technique could transport a ninja beast through space to its summoner, the ninja beast's actual spatial location remained unchanged...
Once the technique ended, or the summoner stopped supplying chakra, the ninja beast would return to its original location-there were exceptions, but that was generally how it worked.
Kushina didn't know anything about "Uchiha Nanashi," but she did know that