Because he didn't want to leave any traces at the scene, lest he be investigated by the police or CCG Ghoul Investigators.
As long as he didn't leave obvious traces, the death of one Ghoul wouldn't cause too much of a stir. It was normal for Ghouls to die at the hands of their own kind, and the police and investigators generally wouldn't care too much about the true cause of a Ghoul's death.
Only CCG investigators, and at least those who had passed the exam to become Second-Class Investigators, were qualified to possess their own "Quinque."
Within the CCG, the ranks of Ghoul Investigators, from lowest to highest, were: Third-Class, Second-Class, First-Class, Upper-Class, Associate Special-Class, and Special-Class. However, below Third-Class, there was also the "Investigator Assistant," who was basically non-combat personnel only responsible for miscellaneous tasks, so they didn't have a formal rank.
Amou Byakuya thought about when he should make a trip to the CCG next.
...
This world was probably in the era of around 2000-2010. People were almost all still using flip phones, which weren't that smart or convenient, so people were more willing to go to places like movie theaters.
You could say her experience was a bit like Kamishiro Rize's.
The female protagonist of this movie suffered long-term unfair treatment from her family, who purely used her as a tool to make money, favoring her older and younger brothers.
Kamishiro Rize was born into the Washuu Clan. The Washuu Clan was a Ghoul clan, and it could be said to be the strongest Ghoul clan in all of Japan.
Kamishiro Rize's bloodline concentration was extremely high, possessing an unadulterated Washuu Ghoul bloodline. Logically, this kind of person would be the most valued genius in the family, as if in a fantasy world, but Kamishiro Rize's actual situation was the exact opposite...
As a Ghoul clan, the Washuu Clan actually revered human bloodlines. The higher the concentration of human blood in a Washuu Ghoul, the higher their status in the family. This led to Kamishiro Rize's status being extremely low.
This was different from the principle of mixed bloodlines like a half-human or half-ghoul. Bloodline and lineage were distinct; the vast majority of Ghouls had some human blood in them.
While Kamishiro Rize's status was low, she was also not allowed to live with the Washuu Clan. Instead, she was relegated to a place called the Sunlit Garden.
She couldn't even inherit the "Washuu" name. She had no surname until she later inherited the surname "Kamishiro."
The most tragic part was that the pure Washuu bloodline that caused her low status also led to her being chosen as a "child-bearer," also known as a "womb."
If it weren't for her childhood friend, Furuta Nimura, helping her escape from the Sunlit Garden, Kamishiro Rize would definitely not have been able to break free from the Washuu Clan's shackles.
Right now, Kamishiro Rize was, to put it bluntly, still in a state of being hunted by the Washuu Clan. Once caught, there was almost no possibility of escaping again. Yet, she was still swaggering around, preying on humans everywhere, which was far too careless.
Since this movie was a "night screening," by the time they finished watching, it was already past 9 PM, almost 10 PM.
Leaving the movie theater and walking on the way home, Amou Byakuya and Kamishiro Rize were still talking about the movie they had just watched.
Just then, two female students in school uniforms walked past them, face to face.
It was Kirishima Touka and her classmate.
Seeing Kamishiro Rize and that human boy walking together so late, Kirishima Touka couldn't help but look back.
"..."
Kirishima Touka stared at Amou Byakuya's back, her brows furrowing slightly.
"Touka-chan?"
Seeing Kirishima Touka suddenly stop, the female student immediately asked.
"It's nothing, let's go."
Kirishima Touka withdrew her gaze and said faintly.