I don't have enough information to say for sure. It could be a character who has some knowledge or interest in pharmacy.
There's no way to know exactly without reading the novel, but we can make some assumptions. Maybe there's a young protagonist who was just an ordinary person in their own world but in the isekai world, they become a key figure in the field of yakkyoku. There could also be other supporting characters like a mentor who teaches them the ways of pharmacy in the new world, or rivals who are also trying to make a mark in the medical world of the isekai.
I'm not sure specifically as it could be about many things. 'Isekai' often involves a character being transported to another world, and 'yakkyoku' might be related to pharmacy or medicine in Japanese. So perhaps it's an isekai story with a focus on pharmacy in the other world.
It depends on your taste. If you like isekai stories where the protagonist has a special skill or knowledge that sets them apart in a new world, then you'll probably enjoy it. The world - building in 'Isekai Yakkyoku' is also well - done, with detailed descriptions of the new world's medicine and society. However, if you're not into the isekai genre in general, it might not be for you.
I'm not entirely sure as I haven't read it specifically. But generally, an 'isekai' often involves a character being transported to another world. 'Yakkyoku' might be related to pharmacy or medicine in Japanese. So perhaps it's a web novel about someone being transported to a world and having something to do with pharmacy.
You can try some popular e - book platforms like Amazon Kindle. They often have a wide range of novels including isekai yakkyoku ones. Another option could be some free e - book websites, but make sure they are legal in your region.
Your local library might be a good place too. Some libraries are starting to include light novels in their collections. You can search their catalog either in - person or online to see if they have a copy of 'Isekai Yakkyoku'.
Another option is to join online reading communities. Members might be willing to share their own copies or know of legal ways to access the novel for free. For example, on Goodreads, there are groups dedicated to different genres of books, and someone there might be able to help.
There are several places you might be able to find it. Some dedicated Japanese web novel sites could be a good start. Also, some international web novel aggregators might have it. However, make sure to check if it's available legally in your region. Another option could be to search for fan translations on well - known translation forums, but again, legality can be an issue there.
Typically, in these kinds of novels, the main character is the person who gets transported to the other world and has a background in pharmacy. Alongside them, there could be a sidekick or a mentor figure in the new world. For instance, a young apprentice in the new world who is eager to learn from the protagonist's knowledge. There may also be antagonists such as jealous local healers who feel threatened by the protagonist's new - fangled pharmacy methods.
I don't know for sure since I haven't read this specific novel. But typically in an isekai story, there's a protagonist who is transported to the other world. So it's likely there's a main character like that in this 'isekai shikkaku novel' too.
I don't know specifically as I haven't read this novel. But it's likely that the main character is someone who is alone in the isekai world.