I'm not sure. I haven't heard of a novel specifically named 'einen koyou wa kanou deshou ka novel' before. It might be a relatively unknown or a very niche one.
Since I don't know this novel 'einen koyou wa kanou deshou ka novel', it's tough to say where to find it. If it's a local or independent work, local libraries or small - scale book fairs in the relevant area might be a start. If it's more mainstream, major online retailers like Amazon might be worth a try, but that's just speculation.
In Indonesia, yaoi manga usually have complex character dynamics and explore themes of love and longing. The illustrations are often detailed and visually appealing.
Early Cold War political cartoons often depicted the tensions between the superpowers, showed propaganda elements, and focused on issues like nuclear weapons and ideological differences.