I'm not very familiar with this specific 'bocchi jieikan no isekai funsenki novel'. But generally, for isekai - themed novels, you could try 'That Time I Got Reincarnated as a Slime'. It has an interesting concept of a person being reborn in a different world and building his own power and community there.
Since I'm not extremely well - versed in this novel, it's hard to say for sure. But in many isekai novels, common themes include self - discovery. The main character often has to figure out their new place in the strange world they've been transported to.
One similar work could be 'Re:Zero − Starting Life in Another World'. It also features an isekai setting with a protagonist who has to face various challenges in a new world. The story is full of mystery and character growth, much like 'isekai no seikishi monogatari visual novel'.
Some works like 'Harem in the Labyrinth of Another World' might be similar as it also has an isekai and harem theme. Another could be 'In Another World With My Smartphone' which has elements of isekai and also has a group of characters around the protagonist similar to a harem in a way.
Well, another way to find kita x bocchi fanfic is to check out relevant fan communities. For example, on Reddit, there might be dedicated sub -reddits where fans share their favorite fanfics about this pairing. They may also discuss the plot, characters, and what makes these fanfics so appealing. So it's a good place to start your search.
One similar work could be 'KonoSuba'. It also has elements of being in a different world and the main characters have to deal with various challenges using their own unique skills. Another is 'That Time I Got Reincarnated as a Slime'. The protagonist is reborn in a new world and has to adapt and make his way, much like in 'isekai wa smartphone to tomo ni web novel'.
There are several works that share similarities. For instance, 'Re:Zero − Starting Life in Another World' has the concept of a character being in an isekai world and facing numerous challenges. The main character has to constantly adapt and find solutions, much like in 'isekai wa smartphone tomo ni web novel'. 'Grimgar of Fantasy and Ash' is also similar as it focuses on a group of characters in a new world trying to survive. And 'How a Realist Hero Rebuilt the Kingdom' where the protagonist uses his modern - day knowledge, somewhat like how the smartphone in the other work might provide useful knowledge, to make changes in the new isekai world.
Well, if you like 'isekai de mofumofu nadenade novel', you might also enjoy 'Sword Art Online'. Although it's a bit different in some aspects, it still involves the concept of being in a different world. The main character is trapped in a virtual MMORPG world and has to fight for survival. There are also elements of adventure and relationship - building in it.
Another similar one might be 'Overlord'. In this novel, the protagonist is transported to a game - like world. It has elements of strategy, power - building, and exploration of a new world, which are common in isekai stories. So it could be a good option if you like 'isekai ekisha no kissaten novel'.
Sure. 'That Time I Got Reincarnated as a Slime' is a popular 'isekai yakkyokun novel'. It has an interesting story about a man who gets reincarnated as a slime in another world and gradually builds his own power and community.
Sorry, I haven't really come across novels specifically named as 'isekai canceller novel' so I can't recommend any at the moment.