Well, Kirei and Gilgamesh make for an interesting pairing in fanfiction. Their complex personalities can lead to some really intense and thought - provoking stories. Kirei's inner conflict and Gilgamesh's haughty nature can create a lot of drama and tension.
The combination of Naruto and Irisviel in a harem setting is quite unique. Naruto is from a world of ninjas with his own set of values and powers, while Irisviel is from a different fictional universe with her own charm. In a harem fanfic, it allows for an interesting blend of different cultures and power systems. It can create new and unexpected storylines.
Well, there might be some out there. You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'naruto irisviel harem' and you might find some interesting reads. However, the quality can vary greatly from one story to another.
In this type of fanfiction, the 'fated encounter' trope is quite popular. Writers like to show how Kirei and Gilgamesh's paths cross in a way that seems almost predestined. It gives a sense of grandiosity to their relationship. Additionally, the 'clash of ideals' trope is often used. Gilgamesh's self - centered and somewhat hedonistic ideals might clash with Kirei's more conflicted moral compass, and this can create a lot of interesting plotlines as they either try to reconcile or go their separate ways.
I'm not aware of its popularity without more information. There are countless visual novels out there, and its popularity would depend on various factors like the quality of the story, the art, and the marketing.
I'm not sure specifically as there could be many interpretations. It might be a visual novel related to a beautiful wife ('tsuma ga kirei' can mean'my wife is beautiful' in Japanese). Maybe it's a story that revolves around the relationship with a beautiful female character, perhaps including elements like love, family, or daily life in a fictional setting.
One possible plot could be that Irisviel summons Archer Shirou in a world where Arturia already exists. Maybe Irisviel has a specific plan to use Archer's abilities to help Arturia in some great battle or quest. Archer might initially be reluctant to work with Arturia due to their past differences, but as the story progresses, they start to understand each other better and form a strong alliance.
You can start by looking on fan - fiction platforms like FanFiction.net or Archive of Our Own. These sites have a large collection of fan - fictions for various series, including Tsuki ga Kirei. Just search for 'Tsuki ga Kirei' in their search bars, and you'll be presented with a list of available fan - fictions.
School life is also a common theme. The anime is set in a school environment, so fan - fictions often expand on the characters' school experiences. This could include things like joining school clubs, dealing with exams, or making new friends at school in the context of the Tsuki ga Kirei universe. It gives more depth to the characters' daily lives.