Saiai Thoughts and Theories [SPOILERS ahead!]

With Kase at the end at the crime scene it really looked like maybe he noticed something there that could cast doubt on the video.

I meant to mention this before but this episode and the preview for the next made it more clear about the track and field members... Originally I felt that they were mostly being shady because of the nature of what happened that night with the drugs, this is something we already know about. More so now I feel in general some members definitely know more than they wanted to tell anyone about the drugs and Kousuke. I think Fuji at least (if not also other members) helped Tatsuo with Kousuke's body and to clean up the scene, the police questioned whether one man could do all that alone and when he was recounting it all it did seem like a lot.

I also wanted to say this about the original video, there is no way Rio would have kept it and shown it as a way to get herself off the hook for Kousuke's muder! Like their father Rio would let people believe she did it before admitting Yuu did it. I know logically you think it's fine for people to know it was Yuu because he was a child acting in self defence and probably wouldn't be sent to prison but that's not how it goes in dramas... Rio wanted to protect Yuu from being labelled a murderer so why would she use the video as evidence she didn't do it ever? That's not her.

Oh also Tachibana, I'm very curious! She seems to be more interested in the money side of things and taking the whole company down. As president I feel like Rio should know everything that's going on with the company but I'm not so sure she really has much of a hand in the money making part of things (outside of securing investors to continue making the drugs) so I just don't think she's involved in the paper company things that Tachibana is investigating. The 2006 thing is such a coincidence but I find myself wondering if there's a possibility that it's actually something separate, like maybe something that happened with her family involving the Sanada company that made her have to take that break and that the meaning of it happening in 2006 is just basically to show that it's something Rio wasn't involved with because Rio wasn't a part of the company or family yet.

Hi guys, im so happy read all your theory

is it maybe that shiori is watanabe akira daughter ? because when i see saiai official website, detail information in past for watanabe akira is he raise his son alone after divorces his wife. after i read your comment before, my friend realized that shiori parent divorced too in september, exactly same time when watanabe kousuke dissapired. 

im sorry with my bad english

-----------------------EPISODE 6 SPOILERS STARTING FROM THIS POST-------------------------- 

Love to see that many of our theories here have come true hehe. I got goosebumps all over when that witness said he saw Watanabe still walking around that night all wet. I knew he didn't die that easy but I didn't think he was that alive lol. Kinda surprised that it didn't take them long to prove Yuu's innocence. 

Now that the Tachibana Shiori theory has been confirmed, I wonder what's her relation with Kousuke? Why does she seem so obsessed with bringing down Sanada Wellness? I still don't think that she was Kousuke's family or girlfriend though, it seems kinda off. And I don't think she was the culprit either, but she could be a lead to solve the case.

Also that scene when Rio was standing on the bridge watching over Daiki, it was like E01 all over again, except that this time Daiki didn't run pass her, he ran after her ? Good job, Daichan! 

@sunflowershine are you still working on that Fuji theory? is there anything new on E06? I want to read more ? that guy seemed so carefree in E06, it kinda bothered me. He just casually mentioned Shiori out of nowhere. The way he remembers someone vaguely related to the case that completely went under the police's radar is so sus.

@dj23 Hello, welcome to the thread! Your english is okay, don't worry. I don't think Shiori is Watanabe's daughter though. I think Watanabe divorced his wife long before his son went missing. If their divorce was in Sept 2006 then it wouldn't make sense that he raised his son alone, don't you think?

@Aimer_is_life lol E06 just proved further how loyal the Sanada's watchdog is. He was so reliable that Rio just dropped down sleeping right after he told her to sleep. The way that he's both conscious of Daiki and understanding Daiki's circumstance at the same time is something else. He's just too good at what he does it's unreal haha.

Hello everyone, nice to meet you! ^^
It was so fun to read your theories. So far I've only been a silent reader, but this time I want to comment too.

I feel sorry because it turns out that Shiori is one of the victims of Kosuke's assault. She even changed her surname from Matsumura to Tachibana in order to forget her past (Or maybe because of her parents' divorce). But I still don't understand why she wants to take down Rio / Sanada Wellness so much?

The ending make me very impatient to watch the next eps. I want to know immediately what Shiori wanted to say to Rio..

GUUUUYS I HAVE A LOT OF THOUGHTS HAHA so many that I needed to write them all down on my phone so as not to lose track. Anyways, it's so nice seeing all of your theories and thoughts~! And welcome @Siti Melyana and @dj23! :)

So here goes my thoughts, in numerical form so it won't be too hard to read hehe this will be long:

(TLDR: thoughts on Fuji Theory, Goto-Iguchi-Yamao link, Watanabe Akira, Shiori and Rio, Kase's background, and Rio and Daiki)

1. Fuji Theory - I'm still suspicious of Fuji @nhii haha, he has always come across as carefree but I agree, it seems too much on E06. Maybe this is just the result of me looking at it through the lens of Fuji-as-a-suspect, but who knows? The way he asked about Rio and Yuu just made me think that he's fishing for information not as a member of the police but as someone involved in the incident. His comments about human nature might be a hint as well, but as of this moment I'm still trying to collect info.
2. Possible Goto-Iguchi-Yamao link - When Goto "saved" Shiori and told her to go home, we can see a silver car in the background with the silhouette of a person behind the wheel. Looking back on E05 and the previous episodes, we can see an officer, Iguchi, tailing Rio. It turns out that Iguchi is a member of the police division, same as Daiki and Kuwata (you can see him in E04, I think, with the shot of the detectives at the long table). Just a passing thought but what if Goto's working with Yamao and Iguchi to bring down Rio?
3. Goto knowing about Watanabe Akira - He knows about Watanabe papa chasing after Rio, he's the one who gave the 5Million yen to him through Yuu. This might be him protecting the company in his own way, using the old 5 million yen bills (which I guess is from the paper companies?) to silence Watanabe and keep him from ruining the company's reputation. Now, with him knowing about Shiori's past, it seems that he'd be an even bigger character to keep an eye out for in the coming episodes.
4. Shiori targeting Rio -You guys are right, she does have a particular grudge on Rio. Like what @maclou and @Kez mentioned, Shiori may have been envious of Rio. Her case is particularly interesting to think about, since both of them are victims. Her grudge really might have stemmed from her envy of Rio escaping assault, or perhaps of herself not attaining the justice she wanted and deserved because Kosuke died suddenly that night. One line that struck me is Shiori saying "I can't forgive stuff done in secret" to Goto, and perhaps this is a hint? This could pertain as well to what happened during Kosuke's case....
5. Shiori targeting Sanada Wellness - She might be targeting the company to get back at Rio, a revenge of sorts. "Why must I be the only one to suffer?" and all that.
6. Kase and his motives - I feel like we're getting closer to knowing Kase's background and motivations. At first I was thinking that maybe the thing that Kase's hiding is his "feelings" for Rio but seeing him as the episodes went by (Iura Arata's so amazing to watch!), I feel like there's something more. All of these may be a way of atonement for something he did in the past. His conversation with Yuu about his motivations to become a lawyer somehow makes me apprehensive, there's something behind those words. Something dark, maybe. He's a strong support for the Asamiya siblings and the Sanada family, in general, so I hope he doesn't do a 180 degree turn and turn out bad.
7. RIO AND DAIKI!!! -That bridge scene!!!! I was losing it at that part lol the parallels with episode 1! I was so happy that this time both of them were able to really hug each other tight, but then again at the cost of saying goodbye. Both Yuriko and Kouhei did so well in that scene - Yuriko's eye acting in the hugging scene in particular, was so good, you can clearly see when she was still resisting and when she gave in to her emotions. Although this was a goodbye, I felt like we'd still see them together in the future haha. Their conversation in the izakaya scene in episode 04 (Rio's "you came!" and Daiki's "I did say I would come, didn't I?" somehow felt like foreshadowing) made me think that something like that will happen in the future------ (cont. in #8)
8. Episode 1 narration - ----and that something is connected to the end of Daiki's narration in E01. That scene of Rio with the blood on her face made me speculate that this could be somehow connected to Yuu and Daiki. It might be an act of self-defense for herself, or for Yuu, or for Daiki. I feel like the story will come full circle with Rio defending someone else (either of these two, in particular), rather than getting defended like what happened in the past.

Anyways, that was long haha! So yeah, just some of my thoughts post-episode 06. There's still some few points I want to talk about but my mind's all over the place right now haha.

Yeah hope so do. If not them, then maybe Fuji or Atsushi, They were pretty sus this episode, more so Fuji at the end with the "Who were you talking with, Senpai" question lol

So is it a possibility that Daiki could be behind Akira's death? At first I thought it seemed like a reach because he had acted like he hadn't seen Yu and Rio in many years but when I thought of it a bit it could be that after Kousuke's body was found he found that Akira was bothering Rio and decided to get rid of him. The only thing though is it caused a lot of problems for Rio and came really close to throwing Yu under the bus which I know he wouldn't want.

It would be a juicy twist tho but I don't really want it.