I'm not sure specifically about 'Power Rangers Samurai' gay fanfics. Fanfics can vary greatly in quality. You could try searching on popular fanfic websites like Archive of Our Own. They have a wide range of fan - created works, and you might be able to find some that fit your interest.
In a 'kokushibo meets tanjiro fanfiction', one possibility is that Kokushibo senses something different about Tanjiro right away. Maybe it's the fact that Tanjiro has a unique scent or an energy that Kokushibo has never encountered before. Tanjiro, being Tanjiro, would be ready to face Kokushibo head - on, but also be open to communication if there's a chance. The story could explore their different views on the world of demons and slayers, and how they might come to understand each other better through their encounter.
For Tanjiro, he could become more understanding of the complex nature of demons. Meeting Kokushibo, a powerful and complex demon, might make him realize that not all demons are simply evil. Kokushibo, on the other hand, could start to have some doubts about his loyalty to Muzan. Tanjiro's tenacity and belief in the good of all might start to chip away at Kokushibo's cold - hearted exterior.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfics from various fandoms, including 'Power Rangers Samurai'. You can use the search function and filter by relevant tags to find gay - themed fanfics.
The battle of Yoriichi vs Kokushibo can be found in the advanced stages of the Demon Slayer manga. It's an intense and highly anticipated confrontation. The build-up and action are both masterfully depicted.
The Japanese samurai mask had many uses. First of all, the mask could cover the face of the warrior and protect his privacy. Secondly, the mask could be used to intimidate the opponent. The ferocious appearance of the mask could intimidate the enemy. In addition, the mask could also increase the aura of the warrior, thus suppressing the enemy on the battlefield. Masks were divided into three categories, including half a head, cheeks, and full face. Half of the head covered a part of the face, the cheeks covered the face below the eyes, and the total face covered the entire face. Masks were usually made of iron, and there might be beards and other animal hair decorations on them. The method of making the mask included beating the iron plate into shape, then finishing it, and finally tying it to the face with a rope. In general, the mask of the Japanese samurai played a role in defense, deterrence, and increasing momentum in the war.
Not very accurate. The movie exaggerated some parts. For example, the samurai's unwavering loyalty as shown was a bit overdone. In real life, there were internal conflicts among samurai too.