Most readers of this manga will view Keima's character as unrealistic. This view is understandable because he has never even SPOKE to a real girl and spends all his time playing games. Furthermore, Keima's social awareness is beyond hopeless- he doesn't even understand that he is viewed as a problem child by his peers (not until the part with Miss Jun Nagase). Yet, he is able to woo any girl he wants if he is motivated, just because he uses of the knowledge he gets from his gaming while doing almost nothing. This abrupt transition should be impossible in real life. This should be how most people see Keima's character.
However, I will offer you a view of Keima's character. I believe that Keima's character is actually more realistic than what most readers/viewers (for those who watch the anime) believe it to be. I believe that if Keima were to be a real person, he would be able to capture girls with a similar efficiency. Here is why:
Keima's obsession with dating sims does in fact shape his personality in a way that gives him exemplary skills with women. Dating Sims are videogames, and in videogames, you do not experience the same amount of emotions that you will experience in a real romance. Therefore, players will try to pave a logical route to the ideal ending. This applies triple for Keima since he is innately a careful person who cannot stand mistakes.
So what does this have to do with his success with women? The fact that this molds his personality to become logically oriented. In most real life relationships or even social situations, both parties are guided by emotions. Emotionally oriented people tend to make horrible decisions when their emotions take control over them. Furthermore, these people are more prone to "trust their nerves" and "flow with the moment".
Need an example? Let's say you are a kid who is asked to apologize by your mother. Both parties are emotionally driven at the situation. The emotionally driven mother is just saying that because she wants to "get the problem over with" and because she is angry. An emotionally driven kid will most likely feel both angry and scared at the same time (but not guilty). So what would he do? Simply apologize superficially, which doesn't actually help either party. The mother is deteriorating the kid's morals (arguable), problem solving skills, and their abilities to think for themselves. The kid is simply allowing the mother to do that to the kid AND he isn't getting what he wanted in the first place (getting away with what he's done wrong) just because he got "caught up in the moment". Doesn't that seem kind of similar to Jun's imposing ideals? Need other examples? Just look at Tybalt from Romeo and Juliet. He unwisely lets his anger control him and he challenges people to fights to death although the prince has threatened severe punishment should the 2 families fight again. What happens to Tybalt in the end? He gets killed by Romeo.
Either way, let's go back to Keima. Since Keima is a logically driven person, he is more capable of doing 2 things: A) understanding another person's feelings, B) being able to understand what happens if you manipulate those feelings in a certain way. Why? Because you are simply more aware of the situation. Keima has demonstrated to be excellent at doing both of these although he is usually detatched from his peers. It doesn't matter whether he never talked to a girl or not. For instance, if he hadn't been able to understand that Kanon's gap in her heart was from the reliance on others to recognize her, he would have never been able to "conquer" her.
Now I'll give you another example of how being logically oriented could help Keima: let's go to another one of Shakespeare's plays, Othello. Iago is able to manipulate Othello so easily to his advantage merely because he is thinking logically- very similarly to how Keima is able to think. On the other hand, Othello is driven by emotions. It is only mere chance that results in Iago being captured (since Iago actually had to stab someone since things accidently went differently than planned). If things had gone 100% as planned, Iago would've actually been considered guilt-free by law. On the other hand, Othello commits suicide and he kills his wife (Desdemona) in jealousy. All of that happened in a period of a few days. And here's the thing- most Shakespeare critics consider Iago to be a genius! I wouldn't call Iago a dumbass, but he isn't THAT exceptional, this is actually a plan that even I could think of.
Keima's lack of concern for his social awkwardness could actually be considered a godsend. Let's pretend that Jun Nagase was right- Keima is playing games because he wants to hide from reality and because he is outcasted. Then, Keima would be a needy character. Keima will try to fix his habits and will desperately try to "rectify" his situation once he "snaps". But those are motives driven by emotions and if he were to have such motives in the first place, it is likely that the actions he will take are driven by emotions. Should that happen, he will only appear to be "awkward", "insecure", "submissive", and "supplicative" just as most others would if they were in the same situation. Why? Because Keima will see those who are more sociable as "higher than him" and he will lower himself to them by "trying to look polite". Those are qualities that are described above generally NOT desirable.
In short, being able to think logically gives the girl he is wooing room to feel emotionally. Keima can always provide "good memories" and "super-desirable-man events" in a pinch.
Another godsend Keima has that most other people don't have is the ability to act. Research shows that communication is 70% body language, 20% voice tonality, and 10% words. That simply means that communication is not meant to spread ideas but is actually developed through evolution to spread emotions. Keima, can manipulate all 3 of those components at will. Now, then the question will be: "then why doesn't everyone manipulate such things?". The truth is, these are not easy things to fake. There are people who have to TRAIN FOR YEARS in order to reach the same level as Keima (who acquired it genetically).
But what does the paragraph above have to do with catching girls? Lots. The human subconscious mind is several times more powerful than the conscious mind. Body language and voice tonality are both processed in the subconscious mind. That is why in real life, if an awkward and insecure guy is seen by a stranger, the stranger will immediately know that he is awkward and insecure before even one word is spoken. Not so much for Keima. Keima can go up to a stranger and look like he has been the most popular boy in his class or can look like a movie star who everyone is after. No one who first sees him will think of him as "Otamegane" (if he wants not to be labeled as such) This ability is something that only a few people actually have.
In short, Keima has the rare (and incredibly useful) ability to manipulate who he actually appears to be.
This combined with his logical way of thinking make his routes much more easier for him. If someone who didn't have this ability was to try one of Keima's routes, they would fail miserably even if they followed it to the letter. Why? Because that person will stutter and blush. He will cover his face with his hands. The girl he is trying to woo is no longer looking at a masculine hero but is now looking at a pitiful dog.
Would it still be realistic if Keima was playing a game in front of the girl he is trying to woo? Absolutely. Keima's PFP (which he brings with him everywhere he goes) is actually good for capturing girls (although the manga severely exaggerates this). Although Keima is adept at acting, he is not flawless. The PFP can allow him to make minor mistakes in his acting without being noticed.
If you observe Keima carefully, it should be clear that he puts a LOT of effort into his conquests. He thinks up of different possibilities and reactions his target may have.
My conclusion is that should someone like Keima truly exist, he would have similar success that Keima has if he were to be thrown in the same situation.
What do you guys think about my conclusion?