I noticed this also and there is a word that describes this beehavior to a T: Narcissist
As defined by Mayo clinic, one of the worlds best IRL medical centers:
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Narcissistic personality disorder is a mental health condition in which people have an unreasonably high sense of their own importance. They need and seek too much attention and want people to admire them. People with this disorder may lack the ability to understand or care about the feelings of others. But behind this mask of extreme confidence, they are not sure of their self-worth and are easily upset by the slightest criticism.
Symptoms
Symptoms of narcissistic personality disorder and how severe they are can vary. People with the disorder can:
- Have an unreasonably high sense of self-importance and require constant, excessive admiration.
- Feel that they deserve privileges and special treatment.
- Expect to be recognized as superior even without achievements.
- Make achievements and talents seem bigger than they are.
- Be preoccupied with fantasies about success, power, brilliance, beauty or the perfect mate.
- Believe they are superior to others and can only spend time with or be understood by equally special people.
- Be critical of and look down on people they feel are not important.
- Expect special favors and expect other people to do what they want without questioning them.
- Take advantage of others to get what they want.
- Have an inability or unwillingness to recognize the needs and feelings of others.
- Be envious of others and believe others envy them.
- Behave in an arrogant way, brag a lot and come across as conceited.
- Insist on having the best of everything — for instance, the best car or office.
At the same time, people with narcissistic personality disorder have trouble handling anything they view as criticism. They can:
- Become impatient or angry when they don't receive special recognition or treatment.
- Have major problems interacting with others and easily feel slighted.
- React with rage or contempt and try to belittle other people to make themselves appear superior.
- Have difficulty managing their emotions and behavior.
- Experience major problems dealing with stress and adapting to change.
- Withdraw from or avoid situations in which they might fail.
- Feel depressed and moody because they fall short of perfection.
- Have secret feelings of insecurity, shame, humiliation and fear of being exposed as a failure.
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Sound familiar? Yep, you know it does, especially with nothing ever being the MC's fault, he always has an excuse for everything, and quickly turns other people troubles into a "woe is me, your situaiton is bad but look how bad it makes me feel!" situation. Add in his rage and anger at anyone who DARES to critique or not go along with what he wants, and bingo, you have the almost perfect match of the MC's actions with this very real mental disorder.
No idea if the dev deliberately tailored the MC to fit this mental personality disorder, but if not it's uncanny how close it matches.
Reading the MC manipulate, or attempt to manipulate the characters and how weak, stupid or gullible the female characters are (the MC must have read and followed every 'neg' technique book on the planet) wore very thin about the time he started getting his memories back. The MC went from "just a funn and silly dude seeking attention and affection" to "manipulative d-bag with zero morals" and this was compounded/confirmed by the memory of the dev ripping his family apart just so he could get his dick wet and because his favorite at the time "the woman who raised me" was unhappy. It showed he had no morals or really any sense of obligation or love for his dad, with how that played out and the reaction? "Oh well, shit hapens" basically.
So yeah, story post memorys returning took a hard left turn into literal mental personality disorder territory.