ok looking at them now... here's some random things i've noticed
first is that it's Very telling that his last victim seems to be the most similar to him in both appearance and job. even his last actions are eerily similar to what Mikoto's were before the murders...
"He was rising quickly in his career and had recently delivered a highly successful project presentation."
(though of course we know from his boss' texts seen in Double that it didn't stay successful for long, and Mikoto was ordered to redo and fix things) (forgiven. i wouldve also started screaming and killing)
it even looks like he has prominent eye bags, just like Mikoto...
that's just Mikoto in glasses. change my mind.
with the last three victims, 10, 11, and 12, I also noticed they could probably represent his mother, his father (at the time of the divorce), and then himself. the ages line up. we don't know when Mikoto's mother had him, so we don't know how old she is, but she'd probably be anywhere from 46-50 right now (meaning having him at 23-27. but if we go with the victim being the same age, she would've had him at 26). if we assume his father would be around her same age, at an age of 34 would make Mikoto have been around 7-11 y/o at the time of the divorce, making him quite young, and his younger sister obviously even younger (anywhere from 1-6 y/o maybe?).
for victim 11, the presumed Father Projection, it states
"He had been working as a professional security guard for a total of 8 years."
34-8 gives you 26, the same age Mikoto's mother would've had him if she was the same age as victim 10 (49). this could just be a coincidence and i'm probably really reaching lmao but i'm putting it here anyway. It's Interesting.
ok that's all i've got for now. i'll probably come back to these later at some point to look for more Interesting Stuff 👍