What are the common themes in Sachi x Kirito fanfiction?

Yes, there are quite a few. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Sachi x Kirito' and you'll find a variety of stories, ranging from romantic ones to more adventure - centered tales that also explore their relationship.

One great kirito x sachi fanfiction could be 'The Lost Memories of Sachi'. It delves into what could have happened if Sachi's memories were somehow restored and how her relationship with Kirito would develop. Another one might be 'Sachi's Second Chance' which gives Sachi a new opportunity to be with Kirito in a different virtual world setting.

I really like the fanfic 'Sachi's Legacy'. In this one, Sachi's impact on Kirito is explored in depth. It shows how her memory stays with Kirito even after she's gone and how it influences his actions and decisions throughout the story. It's a very emotional read.

You can try some popular fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Sword Art Online where Kirito and Sachi are from. There are usually good search functions on these sites that allow you to specifically look for kirito x sachi fanfiction.

A common theme is adventure. Since Kirito is known for his adventures in the virtual world, these fanfictions often have the reader joining him on exciting quests. Another theme is romance, of course, showing the relationship between Kirito and the reader.

Friendship is a common theme. Their bond as comrades in the virtual world is often explored, like how they trust and depend on each other in battles.

I'm not entirely sure as I haven't read this specific web novel in detail. But generally, it might involve the relationship between Kirito and Sachi, perhaps their adventures together in a virtual world, facing challenges and growing as characters.

Another theme is the discovery of self - worth through love. The oc characters often start out with insecurities or a sense of not belonging. But through their relationship with Kirito, they learn to value themselves more. For example, an oc might think she's not strong enough in the game, but Kirito makes her see her own unique qualities.

One common theme is the exploration of gender - reversed dynamics. Since Kirito is usually male in the original, seeing how a female Kirito interacts with Asuna brings a fresh perspective. Another theme is the strengthening of their bond. These fanfictions often focus on how their relationship grows deeper in different situations.

You can start by looking on fanfiction.net. It has a large collection of Sword Art Online fanfics, and there are likely quite a few Kirito x Sachi ones there. Just use the search function and type in 'Kirito x Sachi' and you should find some interesting reads.