Araragi is a good guy who paints himself a bad guy, a hypocrite & a degenerate
He's biased against himself
It's why in his mind he's always doing something sus, but in reality he's just showing you what He thinks of himself through his eyes so you Think he's this terrible person

His normal reactions are fine. He's usually nervous and starts as this sort of reclusive person. He cares too much about what everyone thinks and is skeptical of everyone, even himself. But when his perception changes reality, his character changes to seem like something he's not

In his own personal subjective reality, he's a pedo (even though the girls he interacts with are all older and when they are physically their own ages, they're the ones messing with him), he's sus with his sisters (but in his normal reactions he's a regular caring brother), and -

In general in his mind he's always doing sus stuff. But in reality, he's an unreliable narrator who tells the story how he sees it. Kaiki was the main person to bring up this point. No narrator should be taken at face value. They mix lies into the story with truths. I even suspe-

-ct that scenes such as the toothbrush scene never actually happened period or he distorted the scene in his mind to make it seem worse than it actually was.

It's funny because when narrators switch, the other narrators always seem to paint Araragi as a hero. Hanekawa showed him coming to her rescue. Hitagi is always talking about how he would save anyone and that he's reliable. Hachikuji shows us that he put her on the right path.

So regardless of his many flaws & self-hatred, he's not actually the guy that we see at face value.
We need to see him through the lens of every narrator, even himself.
He's foolish & immature. He makes mistakes. He's occasionally selfish.
But he's a good guy who cares for others

I'm not the perfect analyst and Araragi is a pretty complex character. So let me know if I missed anything, if you disagree with anything, or if you just want to add another comment!