Trouble
OC Creator: TroubleShootn
Relationship: ???
We've been coming up with interactions between Sachiko and Trouble for about as long as we've known our friend. Trouble, an endless existence, and Sachiko, a transient existence, make the perfect contrasting duo. They've been through many different situations and context, but our personal favorite has to be an Avenger-class Trouble and a post-story Sachiko, who's already given up her humanity to become Entropy, "the end."
Trouble forcing a formless, omnipresent concept into a humanoid form, and Entropy forcing Trouble to become their knight. The two now forced to watch the slow death of the universe together, until the end of time. Perfect, mutually destructive, toxic yuri between an immortal being incapable of reaching her end and a transient being that brings forth the end~
Kazuki Adachi - 安立和希
OC Creator: Swappy
Relationship: Friends, Partners, Lovers
We've been pairing Sachiko and Kazuki together with Swappy since early-2025; a few comments about them having good conceptual compatibility, Sachiko an archetypical heroine and Kazuki and archetypical hero, spiraling out into a pair of multi-dimensionally doomed lovers. Originally, the idea of pairing them started with their FGO iterations, but now it's extended beyond that to pairing them together in just about every context that us and Swappy can mutually brainrot about.
The primary image of their relationships is that of someone who will never give up hope chasing after someone who will never escape their own doom. We often like to talk about them as if all of their stories and AUs take place in a successive series of universes, and in each one they meet, fall in love, and are separated by Sachiko's doomed nature. Repeating the same story over and over, each iteration slightly different, simply to be together.
Aureum Pomum Tremelliare
OC Creator: Pixystixxx
Relationship: Mentor-Apprentice
The idea of Aureum and Sachiko becoming mentor and apprentice came about while we were trying to come up with how Sachiko could function in the Clock Tower for an AU. Her mundane backstory makes her very disconnected from the world of mages, so we were struggling to come up with a reason for how she could end up in the Clock Tower.
That was when the idea of Sachiko being Aureum's apprentrice came up. This ended up working very well, particularly due to their paralleling themes regarding their "self." Aureum's personal magecraft revolves around the very concept of her being, her self; while Sachiko is a girl with an unstable sense of self, due to the core concept of her existence being "the end."
Sachiko would be able to understand Aureum in a way few others could, and Aureum would be one of the few people capable of bringing out Sachiko's abilities in magecraft.
