"The murderer did this because he wanted to humiliate the victim. Whether it was taking off her clothes or wrapping neon strips around her body, he wanted to tell everyone that she had been violated and toyed with."

"The murderer didn't assault the victim. He did this to humiliate her even after death." Fujiwara Yuu put the pen back in his pocket and gestured, "He was trying to mislead the police into thinking the murderer was a random sex offender. Unfortunately, he did too much, which only exposed the problem."

"What's the problem?"

"The murderer not only knew the victim, but was very familiar with her. The sliding door lock showed no signs of being pried, which is sufficient to prove that the murderer and the victim were acquainted and that the victim personally invited him into the room. Considering the time of the crime, is it possible that a single mother would invite a stranger into her home when she was alone?"

The crime happened in the early morning, and even if they lived with their family, they wouldn't let a stranger into the house. Furthermore, the victim was very clean, so how could she allow someone to enter the house wearing muddy shoes?

"Wait, did you say single mother?"

"Um."

Fujiwara Yu reached out and picked up the photo placed on the dressing table. In the photo, the victim was smiling brightly and holding a little boy in a karate uniform. Their similar appearance made it easy to tell that they were mother and son.

There was no little boy at the scene, and the old lady who reported the case and was the victim's mother did not mention anything about her grandson, which means that the child was awarded to the biological father after the victim's divorce. This is not difficult to infer.

"I think we can start our investigation by looking at the victim's social connections and understanding the situation first."

"Well, we have to ask that old lady. She should know a lot of things."