The main themes in 'mc is ruthless light novel' might include self - preservation. Given that the MC is ruthless, they are likely to prioritize their own safety and well - being above others. Another theme could be moral ambiguity. Their ruthless nature might make them cross ethical boundaries, which could lead to exploring questions about right and wrong in the context of the story. There could also be themes related to competition, as a ruthless MC would be likely to engage in cut - throat competition with other characters to achieve their goals.
The main character's ruthlessness. It makes the story more exciting. Readers like to see a character who can take decisive actions without hesitation. Also, the plot in 'ruthless mc light novel' is often full of twists and turns, which keeps readers hooked.
One similar novel could be 'Overlord'. It also has a powerful main character who can be quite ruthless at times in dealing with enemies and making decisions in a different world setting. Another one is 'Sword Art Online'. The protagonist has to be tough and sometimes ruthless in the virtual world full of danger. There's also 'Log Horizon' which shares some elements of a character having to be firm and unyielding in a game - like world situation.
There are several platforms where you might find 'mc is ruthless light novel'. One option is to look on dedicated light novel translation websites. But be careful as the legality of some of these can be a bit murky. Another possibility is to check with local libraries, as some are starting to offer digital light novels. If it's a more niche or indie work, the author's own website or social media pages might be a good place to start.
Another aspect is prior knowledge or experience. In some light novels, the MC is reincarnated or transferred from another world. Like in 'Konosuba', Kazuma has knowledge from his previous life which he uses to his advantage in the new world, and this knowledge combined with his unique skills makes him overpowered in certain situations.
I'm not aware of a specific 'mc as robot light novel' to base similar recommendations on. But some general robot - themed light novels could be interesting. For example, 'Full Metal Panic!' has elements related to mecha and robots, though the main character isn't exactly a robot but has a lot to do with them.
Well, a 'demon mc light novel' could involve a story where the demon main character has some kind of special power or ability. It might be set in a fantasy world filled with other magical creatures. Maybe the demon is on a quest to gain more power, or it could be trying to overcome some prejudice from other races in that fictional world. There could also be elements of mystery and intrigue as the demon uncovers secrets about its own past or the world around it.
One popular one is 'Overlord'. The main character Momonga is extremely overpowered. He starts as a max - level player in a game and when the game world turns into a real one, his abilities are far beyond others. His magic powers and strategic mind make him nearly unbeatable.
I'm not sure specifically as there could be many different 'mc as robot' light novels. It might be about a main character (mc) who is transformed into a robot and then experiences various adventures, like dealing with a new robotic form, interacting with other characters in a world where robots are perhaps not the norm, or facing challenges related to the new identity.
One great light novel with a powerful main character (MC) is 'Overlord'. The MC, Ainz Ooal Gown, is extremely OP (overpowered). He starts as a max - level character in a game world that has suddenly become a reality. His abilities and strategic mind make him nearly unbeatable.