The episode sure is a total shock for me. It turns out Aoi isn't most likely the culprit despite blaming over everything, and after understanding the behind-the-scenes cases, it turns out that Sakura actually empoisoned herself. I can't believe I thought that the supposed victim is the culprit, it's like I didn't believe this to happen. Too bad Chihiro's alter ego gets destroyed by Monokuma, and how the show will end remain a mystery to me. It seems another character joined according to the cast status that happen at the end of the episode, I wonder what purpose is he included? I will find out next week!

NOOOOO AE NOOOOOO!!! Ok the suicide, I get that. Had no idea PyschoBear would destroy AE in return. Make sense though, I mean it was too easy to connect him to the school computer.

Oh boy 16th student is coming.

-The trial indeed started with Aoi accusing the trio. However, they had to prove that they went to see Sakura at the recreation room.
This worked on Yashuro, because Makoto noticed that Yasuhiro dropped some candy wrap when they talked each other, and this candy was from Aoi given to Sakura and no one else, and that's after the incident in the infirmary. Therefore, there is no way for Yasuhiro to have candy from Sakura "before".

-Yasuhiro admits seeing Sakura in the end, but states he didn't do anything else. He quickly jumps on the fact it is Touko, because there was evidence: a magazine had the word "Fukawa" written in blood in there.
However, Kyouko mentions it doesn't make sense for him to know that because Aoi strictly forbids the trio to investigate the room. Hence only her, Makoto and Kyouko would know of this piece of evidence. Also, even when they were present during the corpse discovery, the magazine was still in the rack, so there is no way for him to see the "dying message". Also, Sakura's hands were clean, so no way for the latter to have wrote it. The only possible conclusion is that Yasuhiro planted it.

-Yasuhiro gave up and admit he did, because he "killed Sakura". However, something doesn't make sense: the magazine was in the rack, making it more difficult to find, if it wasn't for the fact it was upside down. However, he states he left it on the ground.
Of course, the only possible suspect is Touko, because that fake evidence is inconvenient to her alone.
Touko claims it doesn't matter since Yasuhiro admits his "crime", but something is off. After Yasuhiro explains again what he did, but it conflicts with Kyouko's testimony that Sakura was struck twice.
Touko doesn't get how she found out that, but Kyouko says that not only the wounds match up, but when you look at the bottles on the shelf, it is clear there are 2 missing bottles, not only one. There is another evidence there were 6 bottles overall: each bottle had a different chess piece. On the shelf, there were: Pawn, Rook, Bishop, King. The broken Bottle had the knight piece. Therefore, the queen piece is missing. Touko claims it is possible the piece was missing to begin with, but Kyouko and Makoto did an experiment during the investigation: the remaining glass shards are heavier than a pristine bottle. Which means the culprit took off the piece and some shards, but not enough.

-Yasuhiro also testify he saw Touko going in the rec room a lil before Sakura went in. That's why he entered, thinking he would be fine if there was someone else, but he got scared shitless because he was then alone with Sakura.
In the end, Makoto proves Touko was there due to the handprints found in the locket of the rec room. Byakuya made them cut the chase and order Touko to answer, to which is begrudgedly confirms.

-Touko left the locker immediately after Yasuhiro left, so that she would be able to deal with the fake evidence. However, Sakura was still alive and Touko saw her after putting the magazine back in the rack. As explained in the anime, Touko fainted because of Sakura's bloody face, and Genocider Shou counterattacked as she woke up.

-Aoi insists again they should cast their vote, but Byakuya stops on her track, saying something doesn't add up there. Like in the anime, Shou hit Sakura close to the magazine rack, but it doesn't make sense with Sakura's corpse location. Shou says there is no way she could move Sakura's corpse like that, and Kyouko states it doesn't explain the closed room either. Aoi claims Touko hide there until they opened the room, but it doesn't make sense because when they were trying to open the door, Makoto and Kyouko saw the locket was already open, so there was no way for Touko/Shou to hide in the rec room.

-They debate on the way she died, and Aoi claims it is Touko/Shou's strike, but Makoto points out that the Monokuma File stated Sakura vomited a large quantity of blood. Byakuya is certain it is due to poison, and he presents the C-9 bottle found in the cabinet A. Byakuya claims the culprit switched out the bottles and prove it by drinking it, like in the anime.
It is basically the same: proving who is the culprit with the footprints found at the chemical lab. Trivia: Makoto was also wearing sneakers in the game, so when they investigated the chemical lab, Byakuya checked on the spot Makoto's shoes.

-Aoi is admiting she "did it" but Kyouko stops her on her tracks, refusing such conclusion. While Aoi remains silent and apologetic, Byakuya claims this game isn't stuck with morality, dogma whatsoever. However, Kyouko still doesn't accept that Aoi could be the culprit, because there is still something unexplained: the closed room.
Aoi claims it doesn't matter how she constructed the closed room, but Kyouko wonders why she can't tell them. Byakuya can't believe she believes someone else is the murderer.
Makoto agrees there is something fishy: it doesn't make sense for Aoi not to do something about the footprints left blatantly in the chemical lab. Aoi claims she was in a hurry and didn't realize she left footprints.

-Kyouko asks Aoi how she swapped the poison and protein drink, while Byakuya complains there is no suspect other than her. Aoi pretends she went for the C cabinet for the poison bottle, dropping another one, then went to the A cabinet. This doesn't make sense because the footprints clearly indicate she went straight to the A cabinet and left afterwards. There is no footprint coming from C cabinet to A cabinet. Yasuhiro speculates she went the long way to avoid leaving footprints from the C cabinet, but it contradicts Aoi's statement she didn't pay attention at all. At this point, Byakuya has no idea what's going on. Thereafter, Kyouko says there is another piece of evidence, the glass shard in the poison bottle. Since there was a shard in there, it had to be there when the room was unsealed by Makoto's rash action. Therefore, this bottle was in the room before that point, hence Aoi picked the bottle when they unsealed the room, and swapped only after that with the protein drink container. Byakuya says the poison bottle was swapped afterwards, but the protein bottle could have been there already, which kyouko asks if anyone has "kicked" the container. Since no one did, it is obvious it was brought after the room was unsealed, because of the glass shards being underneath it.

-Makoto and Kyouko prove it was Sakura all along who brought the poison bottle at the rec room, due to the powder on her shoes. Hence it is the evidence it was Sakura who spilled the first poison bottle.
Therefore, it has to be Sakura who took the poison, and drink the poison herself. This also explains how the closed room was constructed.
Recalling how it went, Kyouko and Makoto also add Aoi's behaviour was too weird: instead of rushing to Sakura's side, she went looking for the others, obviously using her athletic abilities to run to the chem lab and pick a protein container before looking for the trio.

-The rest remains more or less the same, although it was Aoi who explained what happened after the infirmary scene, not Makoto. Then, when Monokuma reveals the real suicide note, things are a tad different.
After Makoto claims Sakura didn't die in vain, Monokuma is really pissed off by this pseudo "fake friendship", saying it is the kids fault and all, to which Byakuya agrees. While Monokuma is relieved that someone finally get it, Byakuya says he won't take part of the game anymore. He also explains why: The game is a matter of giving your all in a life and death situation, but since Sakura and Aoi rejected the very fundamental point of the game, people are no longer afraid of the game. At this point, it is pointless for him since the excitment of the game is no longer there.

-Of course, AE's execution was shocking to everyone. To begin with, when Monokuma declared there will be an execution, people thought he will execute Aoi regardless, but since the culprit is already dead, he indeed prefer a special guest for that.
After the execution, Makoto was downright pissed off like no tomorrow, as AE was one of them. Of course, Monokuma doesn't get why he is so upset over a lame laptop.
As Kyouko questions him, Monokuma says he knew from the start that Chihiro was fixing the laptop and knew about its content. However he let it slide on purpose as a "reward" should they are able to decrypt the data. Nothing more nothing less. However, AE being connected to the network was not in his plan at all, so the moment he realized what AE was doing, he took action.
Makoto claims once again AE's "death" wasn't in vain, just like everyone else's. Makoto says their deaths make them stronger and will drive this point to Monokuma at the right moment.

All the dormitory doors have an anti-picking mechanism, and can therefore not be 'hacked'.
This was said/Should have been said by Ishimaru a few days before Maizono was killed.

Neagi actually asked her how she got into his room, and she told him that he forgot to lock the door, also scolding him for being so carefree.
Naegi was surprised about the fact that he forgot to lock it.

The part where Monokuma explains that Asahina found the fake suicide note near the Rec room, while the real suicide note was left in Asahina's room. Monokuma also pointed out that he didn't sign the fake suicide note. Scolding Asahina for acting based on "Some random scribbles he put on a piece of paper.". Once again enforcing the fact that Monokuma is manipulative and does things to make people draw the wrong conclusions, but does not tell lies.

You hear at the very beginning that the culprit was called by a special reference; the only thing you hear about it is that the witness believed it was a politician due to it - this gets dismissed until after, the detective already made an accusation, then it is revealed that the the culprit got referred to as councilor, which is a reference to District Attorneys as well as certain politicians in the US.