What is sakuya visual novel about?

As I don't know the specific 'sakuya visual novel', I can't say for sure who the main characters are. But, if Sakuya is in the title, she is likely to be one of the main characters.

Aine in fanfiction could often be characterized as empathetic. She may be the character that other characters turn to for emotional support. Sakuya might be portrayed as having a certain allure, perhaps being very skilled in a particular area like combat or magic. Their relationship in fanfiction can be complex. They might start as strangers and gradually develop a deep bond through shared experiences. Sometimes, aine's innocence can contrast with sakuya's more worldly - wise nature, creating an interesting dynamic in the story.

It's usually adult-oriented and contains explicit or inappropriate content.

The nature of their relationship in the comic could vary. It could be a cooperative partnership, a hidden romance, or a tense rivalry. It all depends on the comic's plot and character development.

It's an adult-oriented and potentially inappropriate comic. It may contain explicit or controversial content.

One idea could be a story where Sakuya and Mikoto go on a journey together through a magical realm within the Norn9 world. They encounter various challenges that test their friendship and abilities, and in the process, they discover new things about each other and themselves.

There are several manga that might be similar to Sakuya Izayoi. One could be 'Tokyo Ghoul' as they both have elements of mystery and supernatural powers.

The relationship between Sakuya and Marisa in the manga is quite dynamic. Sometimes they collaborate on certain matters, but at other times they may have conflicts due to their different personalities and goals. It's not a straightforward friendship or enmity.

I'd say it's likely a kind of adult-oriented and potentially inappropriate comic. Best to stay away from such content.