[FGO] The Moonlight of My Dreams Is a Social Disaster

Information revealed so far (may be revised as the story progresses): Xide, a witness to history. A witness created to ensure that major historical events are not disrupted, as well as a guarantor. She can alter the past without affecting history itself. History witnessed so far: Mahabharata (ongoing) Singularity Holy Grail War The Knights of the Round Table in Great Britain The King of Uruk The Holy Grail War in Fuyuki Chaldea's Restoration of Human Order (All the information above may be revised.) Everyone has a one-sided crush on her, but the heroine is the little sun! The story of a girl who lost her footing and continues her journey with thoughts of her beloved White Moonlight (Karna: ???) in her heart. (Not really.) The heroine isn't human, and her values are warped! Main pairing: Karna x Xide. There may be bonus chapters, qwq. I suddenly fell in love with the little sun, so I decided to start this story~ Updating alongside the Guda-ko story next door (not happening). Updates whenever inspiration strikes.