Because Lilly at least accepted that he was wrong. He still had Odori to kill, but decided not to follow through because he felt guilty. Comparatively, Kitami killed a bunch of people completely unrelated to Soyo, yet has the gall to act like he's the victim. Lilly killing the victims comes...
We've seen him in this version. He doesn't have a tan. He's the wholesome chad type in this version, which is probably why he hasn't fucked everything that moves yet.
It's because there's a point of contact and it wasn't a coincidence that he wrote down Spica's name. You have to remember that what was written down was way more ambiguous in Japanese and it wasn't definitive that the note was referring to Spica in the first place.
Tbh, it's probably going to be Tohakari who figures it out. They've been building him up for it. He's the smartest character in the cast so far and has gotten the most clues to piece together that Spica is a criminal.
She doesn't care if she gets caught in the first place and told Hatori as much in chapter 2. She'll straight up tell you that she's a murderer if you ask her. Mukai nearly got her to spill the beans but she dropped it before Spica could reply. Hell, this plotline only exists because Spica told...
Spica includes details that nobody but the actual killer could know, barring telepathy. It's way more reasonable to assume that they did commit suicide than someone managing to consistently discover evidence that the police have missed for over a decade. On top of that, the victims that she...
Everything about him has shown that he's the exact opposite of Spica. He's a natural born detective that LARPs as a serial killer while Spica is a serial killer who LARPs as a detective.
Tohakari has always been the smarter one of the two. Spica just coasts off of her ability giving her the answers. He was the one who figured out the issue with the previous murderer without even knowing any details.