Myriad Worlds Travel Starting from The Irregular at Magic High School

However, at this moment, Shiba Miyuki had absolutely no heart to observe this room, which was usually quite mysterious to her.

"Aunt, I can no longer sense Brother's presence."

Ever since Shiba Tatsuya had abruptly hung up the phone, Shiba Miyuki had remained in a state of constant trepidation.

She had dialed Shiba Tatsuya's number countless times afterward, desperate to confirm his current situation.

But Shiba Tatsuya had not answered any of her calls, a situation that was extremely abnormal.

One must know that, under normal circumstances, even if her brother was in the middle of a mission, he would inevitably return her call the moment he received her contact to confirm if she had run into any trouble.

"Do not panic, Miyuki! You should know Tatsuya's strength better than anyone; there is no one in this world capable of killing Tatsuya."

Yotsuba Maya said slowly, wearing a smile.

"But this time is different!"

Shiba Miyuki's brow remained furrowed. Of course, she was well aware of Shiba Tatsuya's strength, and she believed that her invincible brother would not encounter any issues.

However, the situation this time was completely different from anything before.

"Aunt, I can no longer feel the Vow on Brother."

As soon as Shiba Miyuki uttered these words, Yotsuba Maya, who had been composed just a moment ago, immediately turned solemn and placed the black tea she was holding onto the table.

"Is that true, Miyuki?"

Yotsuba Maya's tone was exceptionally grave.

"Vow."

This was a type of systemless magic that the Tsukuba Family, a branch of the Yotsuba Family, excelled at.

The effect of this magic was very simple: it could seal the amount of Psions within a magician's body.

Furthermore, it was absolutely impossible for a magician who had been sealed to break through this barrier