Katagiri didn't do any of what you're saying tho, she literally became one after Glasses exposed her cheating husband to her
Nobody is thinking with their small head, just because you feel a certain type of way doesn't mean that's how it is
And like I stated before, I'm saying this specifically about THIS manga, nothing else
Everything you said is irrelevant to my original point
So a couple of vital pointers before I say anything about this
As far as Katagiri is concerned, I think what a lot of people overlook, is the fact that she already had a declining opinion of her husband, he's clearly lazy and a different person at home, which is already mounting up stress, the core of the problem here, is that Husband's behavior at home completely betrays how is he at work, which attracted her to him in the first place.
Katagiri has an attraction to men in leadership/heroic positions, which creates a two-pronged situation, in one, she is slowly building up an attraction to Yoshida-san, because he's expressing those very same characteristics, whilst at the same time, her Husband is failing to live up to them.
Another thing that needs to be mentioned, which is really weird, is accountability?
Due to her poor choice in a husband she's now confessing to a boy not even old enough to drink before going outside and crying in the street. The MC didn't do that shit to her, she is the victim of her own choices!
Is it so hard for you to hand the housewife accountability for her own actions???? Bullshit. Stop thinking with your small head lmao
This explanation ignores the main plot of the entire story. No, Manager/Yoshida is not responsible for this, it isn't something like maintenance work.
But the fact is, she had a declining mental, most likely due to the stress from all the B and A-rank housewives, and the fact that she just wanted to buy a house and live a simple life.
Husband cheating on her, and using the money they would've had to buy the house pushed her over the edge, that's not a poor choice from her part, that's a total failure from the husband.
She wanted to have an affair, sure, but she probably wouldn't have used the money to buy a house to get it.
Anyway, all the housewives with certain brainwaves, fall victim to the Resonance Jewel, and their mind and body becomes heavily dependent on it. Haibara explained all of this.
The moment her brainwaves matched the necessary requirements, she was already a slave to the Omega Libido cloth, which Hasegawa gave her on the spot.
I do think Yoshida handled it poorly but debating who is responsible is a waste of time, because it never would prove anything. If Katagiri had an affair with manager and then still found out her husband had been cheating on her for... jee how long? Like since the start? Yeah, I'm pretty certain she still would've had a mental breakdown! I mean its not like she would've just shrugged that off and acted like nothing bad happened
Also, if you look at the typical pattern of B rank and A rank, you would know that the brainwaves indicated determine their rank primarily.
B-rank like Ichinose-san have underlying fetishes that they keep secret from their husband, that they can no longer contain
A-rank have fetishes that usually are vented in the form of an outlet or stress, for example, Tsujisaki was bullied in school which created her lust for revenge, or Andou being tortured at work at black company, which made her develop masochist/sadist tendencies
S-rank have mental breakdowns that usually lead to a desire for vengeance or destruction. In Katagiri's case, chaos. Get it? Chaos Creator?
Given this typical framework, there is no situation where Katagiri would've just walked away after finding out her Husband has been cheating & splurging their getaway funds. Whether she had an affair, or a happy ending or whatever. It's just not possible