Hiroya Oku likely starts with a concept or story idea. Then, he sketches out the characters and plotlines. After that, he refines the details and adds depth to the story through continuous revisions.
Well, without having read the 'takarakuji de 40 oku atattandakedo light novel', it's hard to say for certain. However, given the title, it seems likely that the story is centered around a situation where someone has come into possession of 40 oku, which could be a very large amount of money or some valuable asset in the context of the story. It might explore themes such as the impact of sudden wealth on one's life, relationships, and personal values. The 'takarakuji' part might imply that this wealth was obtained through a lottery - like event, and the light novel could then detail the various adventures, challenges, and emotions that follow this major change in the character's circumstances.
There are several places you could search for the 'takarakuji de 40 oku atattandakedo light novel'. Online book retailers like Amazon or Barnes & Noble might have it available, either in physical or digital form. Another option is to check with specialized Japanese bookstores or websites that focus on light novels. They are more likely to carry less well - known titles like this one.
Smut fiction is a type of fictional writing that contains sexually explicit content. It often focuses on sexual encounters, relationships, and desires. However, it is considered a form of adult - oriented literature and may not be suitable for all audiences.