Can you recommend some good 'reigokai isekai novel'?

I'm not sure about the exact characteristics of'reigokai isekai novel' without reading it. But in general, isekai novels usually have the element of a character being sent to a different world. This new world often has its own rules, magic systems, and species.

'Arifureta: From Commonplace to World's Strongest' is also a'revenge isekai novel'. Hajime Nagumo was betrayed by his classmates in the isekai world. He then embarks on a path of self - improvement and revenge, becoming extremely powerful along the way.

One popular 'isekai shokudou novel' is 'Restaurant to Another World'. It tells the story of a Western - style restaurant that serves as a portal to another world on Saturdays. The unique concept of different fantasy creatures coming to the restaurant to enjoy delicious food makes it a very interesting read.

One popular 'isekai kenkokuki novel' is 'How a Realist Hero Rebuilt the Kingdom'. It has an interesting story of the protagonist using his modern - day economic knowledge to revive a struggling kingdom.

One popular 'gamer isekai novel' is 'Overlord'. It follows the story of a powerful gamer who gets transported into the game world he was playing, and he has to navigate this new realm with his in - game character's abilities. Another great one is 'Log Horizon'. It's about a group of players who find themselves trapped in the game world and have to figure out how to survive and thrive in this new environment.

There are so many novels out there that it's hard to point out specific isekai gun novels without more research. However, you could check out popular light novel platforms like BookWalker. They often have a wide range of novels, and you might be able to find something in the isekai genre with gun elements by using their search and filtering options. Another option is to ask in dedicated anime and light novel groups on social media.

There's 'I'm in Love with the Villainess', which also has a bit of a gay isekai feel. The story focuses on a different kind of relationship in an isekai world. It stands out because of its fresh plot and the way it develops the characters and their relationships in this new world.

One popular 'hitoribocchi isekai novel' could be 'Solo Leveling'. It has an amazing story of a weak character becoming extremely powerful in an isekai - like world. The protagonist's journey of self - improvement and his battles against various powerful foes are really exciting.

One popular isekai op novel is 'Overlord'. In this novel, the main character is transported to a different world with extremely powerful abilities. He has to navigate this new world while being almost overpowered compared to the native inhabitants. Another great one is 'Tensei Shitara Slime Datta Ken'. The protagonist, reincarnated as a slime, quickly gains OP (overpowered) abilities and builds his own nation in the isekai world. There's also 'No Game No Life' where the siblings are transported to a world ruled by games and they possess incredible skills and intelligence that make them OP in this new realm.

One popular isekai novel is 'Sword Art Online'. It combines the isekai concept with virtual reality gaming. The protagonist is trapped in a virtual world and has to fight to survive and clear the game. Another is 'Re:Zero − Starting Life in Another World', which has a unique take on the genre with its time - loop mechanic.