On at least two occasions, Yoosung apparently changes his mind over whether he ate and what he ate. One time, he says he went home and burnt his hand making ramen (Including a picture of the burn!), yet afterwards he calls and says he ate at his university's cafeteria. The other time you can ask him if he's eaten yet, he says yes, and later on in the same chat, you get to ask him again, to which replies that no, he hasn't eaten yet.
Occasionally, a character will text you while also talking to you on the phone after a chatroom.
During the the main story it's implied that you're staying at Rika's apartment, and the characters basically treat it like your own home. But why is that exactly? In the prologue chat V makes it clear that you can't touch anything in the apartment, and that everything you need to work as a party coordinator is linked with the app on your phone. And it's not like the access to the app depends on you being in the apartment, either, since you can still use it from other places (like Jumin's penthouse). So why would you stay there instead of just working from your home?
You're there because Unknown told you to be there. As seen in the Bad Endings, going against his orders will result in him kidnapping you and forcing you to be inducted into Mint Eye.
But he never says anything about staying at the apartment. He only asks you to go there and, aside from one text, completely stops contacting you after you do so.
Refusing Unknown's request in the prologue will result in being kidnapped and becoming part of Mint Eye. It makes you wonder, how many people did he seek out before you?
Right before the story branch in the Deep Story mode, Unknown appears on the messenger after being in invisible mode. Maybe he'd successfully hacked into the messenger at that moment, but if not, how long had he been reading your conversations?
In the end of the first Secret Ending, Jumin arrives at Mint Eye's headquarters right after V gets shot. Jumin probably watched his best friend die, totally helpless to do anything about it. Circumstances also finally reveal why V has been so secretive and prove that Jumin was right to keep trusting him. Yeah, the episode ends with Saeran being rescued, but it's obviously a very hollow victory for Jumin.
In Seven's second bad relationship ending, the last thing you see is a CG for a gunshot, and it's heavily implied that Unknown shoots and kills Seven. But what about you? It's implied you're killed along with him, since Seven asks you to look away, and Unknown begins mistaking you for his abusive mother.
The prologue bad ending for Another Story where you call the police out of suspicion at the caller. While this led to Mint Eye's disbandment, the events of Ray/Saeran's route make this less optimistic of a bad ending because the news being made public means Prime Minister would have found where Saeran was and will get rid of him the same way he tries to get rid of Seven in Saeran's own route. By calling the police, you doomed the twins. No wonder it's called a bad ending...
Seven and Ray/Saeran's route are like mirrors that parallels each others fate. There are elements in their routes that are similar to each other. They were sweet and loving to the MC early on in the route and later, attempted to push her away before finally realizing that the MC accepts them no matter who they are. Albeit, for different reasons. (MC accepting Seven and Saeran respectively. The former, for who he is even if he lives a dangerous life. And the latter, for the fact that she will remind and accept his two "Personalities" for who he is and that he truly deserves happiness and freedom even if he is weak). Similarly, their routes had the other twin kidnapped(Saeran mistaken as Seven by Vanderwood and taken hostage. Seven being abducted by their father).
Throughout Ray's route, Zen majorly talks about his role of being the lead, Zekyll and White in the chats and how he had difficulties to analyse and understand a character with a Split Personality and later finding his answer. Not only does this answer accurately speak of Saeran's state of mind, it also spoke some light of Rika's character and how, by the end of Saeran's route, ended up differently. Whereas Saeran had a self reflection of his anger and come to accept his faults, eventually wishing to fix his mistakes, Rika chose to let her anger and resentment consume her and in the process, refuse to fix her own mistakes.
On the second day of Ray's After Ending, Saeran must go to Rika's apartment to go see if he can help rescue Saeyoung from his agency's boss and their father. Not accompanying him leads to a bad ending. On the third day, Saeran will lead Rika and V to the lake so as to give MC and Saeyoung a window to escape while they're distracted. He will insist on MC to leave him there and to not come back and move on. In order to get the good ending (or alternatively the normal ending), you must try to convince him to not sacrifice himself and that you won't leave him, and after leaving MC must return to him shortly afterwards. Not doing this leads to several bad endings. What does this mean? In Ray's route, Ray would constantly ask you to promise to not forget about and leave him, even if he constantly makes mistakes. Additionally, during Saeran's cruel episode during the 8th and 9th day, he admits that his aggressive front is largely a cover-up for his paranoia that he will be abandoned and hurt. By permanently leaving him and not accompanying him during his After Ending, you have basically broken your promise to not leave him and have reinforced the idea during his cruel period that being kind and sensitive (i.e. not aggressive and what Saeran believed was weak) will lead to betrayal. Conversely, being beside him and returning to him means you have kept your promise and that his kindness won't lead to him being hurt.
This is probably obvious, but Jaehee is only guarded and suspicious about the MC's feelings for Zen in Casual Story. In Deep and Another Story, she doesn't even seem to think of the possibility of MC falling for Zen. This is because choosing Casual Story means that there is a 1/3 chance you might choose Zen's route, but in Deep and Another Story, Zen will not be available as a love interest.
Blue roses do not naturally exist. They're generally made by dying white roses blue. In the language of flowers, white roses can symbolize innocence and purity. Now let's remember that Ray wears a blue rose boutonnière. The blue rose boutonnière doesn't only refer to mystery and the unobtainable (their meaning in the language of flowers) for Saeran/Ray. It references both his innocence and kindness being tainted, and that Ray wasn't someone who existed naturally, but was rather artificially created through brainwashing (brainwashing which includes a blue liquid, which could be compared to some dyes.)
