An ordinary cosplayer who died in an accident at a convention wakes up in the body of Miss Higekiri, a female version of Higekiri from Touken Ranbu.
She arrives at the citadel bearing a thousand years of history as a sword spirit, but has forgotten everything. She can't remember her own name or find her way through the citadel's corridors. All she has left is an instinct to search for someone important to her.
On her first sortie, with bloodshed all around, she picks up a broken sword amid the wreckage and finds a badly wounded young boy unconscious nearby: her "little brother Maru."
When he wakes, his cry of "Sister!" rekindles a bond that has lain dormant for a thousand years.
From then on, the citadel's days and nights are shared by an unusual pair: a Saniwa with an awful memory and no sense of direction, and Lord Hizamaru, stubbornly protective and forever worrying about everything.
She gets lost three minutes after leaving, and he frantically searches every corner for her. She forgets her battle plans on the battlefield, but never forgets to shield him. She forgets yesterday's promise, but always remembers to leave a light on for him.
He is her anchor, and she is his light.
From a dilapidated citadel to the battlefields of time, from the political undercurrents of the Time Government to the world-ending threat of the Retrograde Army, she takes charge of the citadel as "Higekiri" and cuts through conspiracies. He transforms through his extreme training as "Hizamaru," determined only to stand by her side.
A thousand years of forgetting: a trial, and a bond.
"What does it matter if I forget the world?" She brushed his hair, her expression tender.
"This road is long, but I will never forget you."
Damn it, I saw it repeated several times, and I thought I missed it, or I was stuck. I read an article with tens of thousands of words, and I thought it was a good novel, but it turned out that it seemed to be an AI (you can judge for yourself, I think). At the beginning of the chapter, it was about Abandoned Honmaru, and when it was about ten chapters in, it was said that there was a man with a sword in it, what was it? Doesn't the logic conflict? I thought it was a new article, but you showed me this?