Well, if you like the idea of 'isekai tensei ni kansha o novel', you might enjoy 'Sword Art Online'. Although it's not a pure reincarnation story, it has the aspect of being in a different world. Also, 'Log Horizon' is a great choice. It deals with characters being trapped in a game - like world, similar to the isekai concept, and they experience growth and various relationships there. These novels can give you a taste of similar themes.
I'm not entirely sure as the title is rather specific and not a well - known mainstream work. It could potentially be about the concept of isekai (another world) and the idea of being reincarnated (tensei) with a sense of gratitude (kansha) within the context of a novel. Maybe it follows a character who is transported to another world and is thankful for the new experiences or opportunities this new life brings.
I'm not sure specifically as I haven't read this exact light novel. But typically in an isekai light novel, there's a protagonist who gets transported or reborn into the other world. There might also be side characters like a mentor figure who helps the protagonist understand the new world, or friends they make along the way.
Well, one of the main themes could be the concept of isekai itself, which often involves a character being transported to another world. Another might be the idea of gratitude ('kansha') in the context of this new world they find themselves in. Maybe the protagonist is thankful for the new opportunities or relationships in the isekai world.
One popular 'isekai tensei ni kansha wo' light novel could be 'That Time I Got Reincarnated as a Slime'. It features a unique story of a man being reincarnated into a slime in another world and building his own kingdom. Another might be 'Overlord', where the protagonist is transported to a game - like world. There's also 'Re:Zero − Starting Life in Another World', which is known for its time - loop mechanic and complex character development.
One reason is the power - fantasy aspect. In many 'isekai tensei ni kansha wo' light novels, the protagonist often starts from a lowly position and then gains incredible powers or abilities. They can then use these to change their new world and become a hero or a great leader. Another factor is the exploration of new worlds. The detailed descriptions of these otherworldly settings, from the geography to the magic systems, are really fascinating.
Well, the title 'tensei ni hakobijin no isekai kouryakuhou novel' gives some clues about the novel. 'Tensei' usually refers to reincarnation, which is a common trope in isekai stories. 'Hakobijin' could be some sort of important figure in the story. The 'isekai kouryakuhou' might suggest a strategic or planned adventure in the other world. Without reading it, we can only guess that it may have a story full of fantasy elements, with the protagonist using their new - found identity or abilities in the isekai world to face various challenges and grow.
I'm not entirely sure specifically as there could be many different stories within this genre. Generally, 'isekai' often involves being transported to another world, 'onsen' is a hot spring, and 'tensei' might refer to reincarnation in a novel context. So it could be about a character being reincarnated in a world with hot springs.
There's 'Overlord'. The main character is transferred to a different world where he has to navigate his new life and power. It has similarities in terms of the concept of being in a new world like in 'isekai ni kita mitai novel'. Also, 'Log Horizon' is a good one. It focuses on characters being trapped in a game - like world, similar to the 'isekai' genre.
I'm not sure about the most popular ones off - hand. But there could be some niche works that are well - loved within the genre fans. You might need to search in specialized Japanese literature or anime - related forums to find out.
Some popular isekai novels like 'KonoSuba' might be somewhat similar in the sense of the other - world setting. But it's more comical. Another one could be 'Re:Zero' which also has elements of a character struggling in an other - world life.