Basically the Aono's and her mother have PROTECTED her from reality and she has gotten WAY to use to it that she thinks it will LAST forever no matter what she does! I compare her to an idiot that sets fire to some wood, thinking, "oh the OTHER few times, it was small and so this time it will be the same!" Only this time it fucking blew up into a HUGE fire and now "THE ENTIRE BLOCK IS ON FIRE!"
Miyuki is now in PANIC MODE and so it's EASIER to listen to "people she really SHOULDN'T like Kondo! He KNOWS she's not thinking straight, but it's no different then how Eri was! Miyuki clung to him because she was a sinner and lost the Aono's and she can't get to Eiji to "explain" herself! Though just like her FEMALE LOUD MOUTH FRIEND later when she tries to TALK to Eiji to "apologize" for her behavior! Ai said it straight! Their (Her and Miyuki) are counting on Eiji being a good guy that they can just FORCE their Empty/Half Empty apologize on him! Assholes ALWAYS pull the "you're not a good person if your not FORGIVING" AKA Beiiing a GOOD Person means being a DOOR MAT to avoid conflict! It's the HEIGHT of disrespect and Miyuki only FINALL
Her actions siding with Kondo was done out of panic and a belief at the time she lost Eiji, since she was ALREADY going to lose him in her mind, when THEN and this chapter were her POINTS OF NO TAKE BACKS she squandered! She might as well betray him and side with Kondo then not have to confront the issue! Just as Kondo wanted since the point WAS to emasculate and break Eiji both for HIS enjoyment and fufilling Tachibana's request since she said it already. The point of losing Miyuki was to under cut and destroy him emotionally so he can't focus on his talent for writing, and so SHE wins as the BETTER WRITER "by default" just like how SHE became the smartest girl in her grade group because Eri's grades dropped because she was trying to be a Gyaru idiot because Kondo wanted it, and even AFTER Kondo threw her away, she got OUT of the study mindset that it was HARD to get back in, as illustrated in her POV in the Novel where when going to High School or was it Junior I forgot! It was said Kondo aced the Entry Test with ease (Reminder he's an IDIOT) while Eri STRUGGLED to make the CUT OFF Point (the Min Grade you have to get to AVOID a PURE FAIL! Like if the AVERAGE is 65, you must have 65 or higher to avoid a COMPLETE "F" Grade or FAIL) which wasn't like her. It was her CONSTANT failing as she focused 100% on "Trying to win Kondo back" that she basically had ZERO CHANCE of getting into a even DECENT University and so her parents were adament about cutting her off the second she graduates! THAT DARK point along with Endou sending her PROOF Kondo NEVER CARED that almost made her kill herself
Miyuki is in the same spot! Ms. Aono made it clear she was DISOWNED as both a "surrogate daughter AND a potential daughter in law", Eiji's life was falling apart and WORSE the school is now ADAMENT about finding out WHO is responsible for the bullying of Eiji Aono! She's TERRIFIED and so continues to make BAD DECISIONS because she still falls under the sore spot of still being HELD to her own actions and should NOT be given an OUT! Kondo is like what a year or two OLDER then her, he's not an adult either as they got PICKED UP as Minor's about to do something they SHOULDN'T by the cops. And he's not SUPER Experience Manipulator as much as people want to call him a smooth operator.....as the girls he seduces, Miyuki and Eri especially HAD AGENCY! They just FOOLISHLY thought he GAVE A DAMN! Eri is STILL worse then Miyuki as in her Viewpoint, she saw this CONFIDENT Jock Handsome kid say he liked her and all she had to do was THROW Endou away and she'd have it! All her BAD DECISIONS in never seeing the FLAWS in his "Perfection" (which was the POINT of her turning on Endou, once she COLLAPSED her Support system! Doubt Kondo knew having her BETRAY her "childhood friend" would cause the ENTIRE Support system to collapse, but hey he's a kid pulling Seams and seeing what comes of it! It's why he's so caught off guard when this time, HE'S the one left butt naked from doing that!) even AFTER the reveal he never cared and she did it all for NOTHING didn't deter her untill her life imploded even more doubling down till Endou's REVEAL that Kondo never cared during the current events
At best you could say BEFORE her "last conversation" with Eiji when she "finally got to talk to him" she wanted to AT LEAST salvage their "brother x sister" like childhood friendship! (At that point she's FULLY cut off Kondo, as in she now knows his nature and getting involved with him was a HUGE mistake and she's ALREADY expelled, along with her mother in the Hospital! I have no clue if she is disowned as I stopped reading at the point involving the Prime Minister and Tachibana FINALLY getting her VERY OVERDUE Karma! But it's looking like it will be! Especially with the Lawsuit from Ms. Aono as Poor Ms. Amada was unaware about what happened in CH 1 in the first place! Yes Miyuki cheated, but she wasn't aware that she had ALLOWED her "Affair Partner" to harm Eiji, and worse, participated in helping him even if UNWITTINGLY to an EXTENT as she DID let him take that picture STUPIDLY thinking he was going to use it as a defense if Eiji came for revenge, but instead used it to FRAME him of stalking and harming ) So when Eiji made it clear he was INDIFFERENT to her, not the HATE she expected, that hurt MORE! It means she COMPLETELY lost him and he just wants to remember "The person she was" not the "Creepy Whore he saw in Chapter 1 when she sided with Kondo" and then kept CONTINUEING to SUPPORT via inaction!
Even after she FINALLY confesses! One of the Interviewers is NERVIOUS she might lie about breaking up with Eiji and delay the investigation which thankfully as said at that point, she tells the FULL TRUTH, not even CARING if Kondo is destroyed by it. Fool was already destroyed and he made her REALIZE she never should have gotten involved with him, nor convince her he was "an innocent party" as the second he propositioned her to cheat and ENCOURAGED betraying Eiji as well as attacking him and framing him for the wrist injury
And remember, Kondo wasn't "A Bad Guy after ALL of that" till she saw the picture Endou send her of him with Eri wearing a Gift she gave him to cormorate the start of their "Relationship" AKA the AFFAIR and BETRAYING EIJI just to RUB Salt in the Wound that she gave a Heart felt GIFT to her AFFAIR PARTNER, more so which he RE-GIFTED without a care to another girl in his harem she FOOLISH never considered he had so finding out she was just one MARE in his stable he favored for BUSINESS reasons had to have Hurt! was when she FINALLY turned on him....well that and when he cried for help, his quick change to SMUGLY talking down to her when she "in tears" called him out on "cheating on her" funny as even he had to laugh at how insane she is for calling their relationship that was BUILD on Cheating on Eiji Aono, a childhood friend she CLAIMED to love and cheated with him on "a relationship" even when he KNEW trying to smooth talk would have been the smarter option as he REALLY needed her help, but the SCORPION cannot change it's nature! He just COULDN'T resist BREATHING IN the despair he had build up instead of realizing THAT WASN'T THE TIME TO DO SO! But yeah it's only when SHE was personally effected did she finally realize she was in the wrong 200%
It's only BECAUSE she started doing the right thing ONLY WAY TOO LATE AND AFTER Ai GAVE THE IDIOT HER MUCH NEEDED "REASONS SHE SUCKS AND WAS TERRIBLE" BEFORE SHE STARTED TAKING PERSONAL RESPONSIBILITY NO MATTER HOW MUCH IT COST HER! That she and Eri to an extent get my pity enough to HOPE they at least LEARN from this and don't make future mistakes like this AGAIN! As there ARE some cheaters out there who AFTER it went bad for them and cost them EVERYTHING! Changed their ways, yet STILL get shit on the second they are outted or out themselves as a "FORMER!" I say if they LONG earned redemption and atoned, there's no reason to hold it on them as it's not a GREAT sin like MURDER! Shit like THAT is higher on my "Unforgivable" meter then Cheating, and even THEN it depends on the CIRCUMSTANCES and "HOW HIGH" the sin WAS!