1) Realistic plot armor:
Unlike many other novels where the MC and his friends won't die, this novel will. It's realistic in a sense that anything can happen. Killed by stray arrows, getting ambushed and surprise attacks. The MC friends will die. His knights will die. His citizens will die.
2) Harem (why isn't this tag here?) :
Not all "beautiful girls" will be conquered by the MC. I think it's a pity because who doesn't want a tsundere knight? Tsk... But it's kinda refreshing to me as I don't want some cliché harem scenes. It feels natural how the MC harem approaches him. Which is not something you will see in other novels.
3) OP MC but not so:
MC is op, yes. But can he face off a 1000 soldiers by himself? No. He make use of his subordinates to help him. This really makes me happy because I'm kinda sick and tired of MC (especially in Chinese novel) to have super power that kill millions of soldiers and can overcome everything. Also, just because the MC has knowledge of advance technologies, doesn't mean he can apply them in this world. There are many things that can differ greatly to Earth. Gravity, particles, and chemicals. As such, the MC will give the idea, draw the idea, and find suitable people to research on it.
4) Kingdom building:
Many novels have a rather not so in-depth Kingdom building topics. They just give orders to the subordinates and will be done without any problems. But it wasn't the case for this novel. In fact, the author spends a chapter or 2 for management purposes.
"I will just conquer you because I don't like you." NOPE! The MC won't do that. He will only do it when people attacks him. And when he build up his army, and have strong technology, he did not seek expansion immediately. He will stay in his territory and make the citizens comfortabe first. Like Eu4, you need to take care of your territory before expanding otherwise there will be rebels. Also, there are many trades with other lords which you don't see quite often in other novels.
6) Finally, the plot:
Repetitive? Nope. Rather, it is quite interesting to see the MC going around participating in something rather than staying at the castle and listen to reports. However, the arc might be boring sometimes because it takes too long to complete an arc. But there are time skips here and there so I forgive my the author.
1. Romance: Along the story a rich, single merchant lady will appeared as a potential love interest. This 30 years old lady looks young as she is a half-breed of an elf and human. Thus, many people wanted to marry her but she rejected them all. Throughout the story, the lady showed interest in the protagonist. She confessed to the protagonist earnestly, dared to make a move on the protagonist, and even wanted to eat a pill that will shorten her life span in exchange for a 100% chance of the protagonist to fall in love with her. Yet, what did the protagonist do? He rejected her, over and over again. He has chosen the clumsy dragon female, and her sister instead. I mean, if you're already going for the harem route must as will take in one more right? The lady confessed to you under the moonlight and with the correct atmosphere, didn't he skipped a beat? Wtf man? You c*ck block is it?
2. Power: During the story he will have a chance to get the previous traveler's power. What did he do? HE REJECTED IT!!! Wtf man? You dumb or what? There's a super op power for you and you rejected it? Served you right for unable to use magic after that.
3. Ending: Wow, I'm very disappointed with this. He came out from a time-distorted portal where he was in it for a few hours while 10 years had past in the real world. He found out that the rich lady's sister that I had mentioned above was forced to get married to the mad king and he killed the mad king. And that's all. The chapter was done like that. It felt rushed... After spending hours upon hours to read 1000+ chapters, with the ending ended like that... I'm disappointed.
Extra: I'm f*cking disappointed when he killed the miko, in a terrible way as well. f*ck him. But he has a reason behind it but still, I don't like it.
-Bragging on the Internet. "I can connect to other world!!" "Post it on the forum as an anonymous!" "Share photos on the Internet!" That's quite a dumb thing to do. And the forum took up an entire chapter. So far, 3 chapters were wasted.
-Parasite. He is a NEET in the real word, relying on his parents wealth to take care of him. In the other world, he asked someone to pay for his slave, repairs his mansion and buy him horses.
-Obstacle. No obstacle for the MC. Everything goes smoothly. Just a slice of life novel so far.