The realist hero’s kingdom restoration chronicles~~ Not quite sure of the exact name... Invaders of the Rokujouma~ Gets real good after vol 5~~!
Honestly, most of their novels are pretty good. I especially liked the skeleton something forgot the title.
Hmm...these are less popular, but I think it's because their name or their cover looks weird. They're still quite good imo. The Master of Ragnarok & Blesser of Einherjar - An everyday student becomes the leader of a down-on-their-luck tribe. Through using historical innovations in tactics and metalsmithing, he's pioneering a turnaround. Outbreak Company - Because of his knowledge, an otaku gets kidnapped by the government and becomes the manager for a company that's bringing Japan's culture into a kingdom of another world. It might seem like a gesture of goodwill, but it turns out that his actions might not be having such a positive effect. How NOT to Summon a Demon Lord - Anime currently airing now. Loner player gets pulled into a fantasy world and his only way to communicate with others is through a demon king roleplay. Clockwork Planet - The earth as we know it has ended. But all was not lost as a legendary figure somehow converted it into a world of clocks and gears. Years into the future, people are living their everyday life, unaware that greed and ill-intent lurks beneath the surface. I Saved Too Many Girls and Caused the Apocalypse - The MC has a bloodline where he is the last line for those heroines whose story have lost a hero. If he can't solve it, no one else can. The only problem is, the stories keep coming and the girls that he's helped...aren't leaving... My Big Sister Lives in a Fantasy World (Warning: Complete but Incomplete. AKA, S2...someday.) - Boy somehow gains the ability to see titles above people's heads. Instead of being put out, his sister actually jumps onto it.
[If It’s for My Daughter, I’d Even Defeat a Demon Lord] hope they did better with the list of titles.
I got reincarnated and mistaken for a genius. -The web novel is great, but it is best to read both that version and the J-Novel version. The J-Novel fixed a few of the confusing bits, but also lost a few parts. Thus I recommend reading both.