Demon Slayer: Rengoku Kyoko's Beloved Route

[A mood-lifter, updated whenever I feel like it]

Kensho Anko, 24, is a history teacher at Demon Slayer Academy who has just awakened memories of her past life.

One day, she is stopped by the transfer student, Sosuyama Katsuji. She assumes he has something important to say, but instead he suddenly shouts something incredibly rude:

"What? Kyojuro, how did you turn into a woman?!"

"I was planning to have you beat me up to let off steam. How am I supposed to apologize now?"

Kensho Anko: ...

Could someone remind him that she's a teacher and can't beat up her students? And that in this life, not only is she a woman, she's been living in this body for twenty-four years. There's nothing she doesn't know about it.

Kensho Anko was the last of the nine Hashira to awaken her memories of her past life. Everyone tacitly agreed to protect this secret.

But nobody knew that she had always known the story of her previous life.

Every night, she visited the Taisho era in her dreams, watching everything unfold from a first-person perspective, all the way to her death on the Mugen Train.

Then one day, she truly arrived in the Taisho era in Kensho Anko's body and, together with her student Katsuji, saved Sabito, who had died in her previous life...

*Anko-sensei is adored by everyone and has no idea

*That's right, Kyojuro is gender-swapped, with a past-and-present-lives setting

Theme: Be happy.