!!! Warning!!!: The pairing is with Chuuya. If you don't like it, click away.
Hanakain Mayu is a Saniwa. While carrying out a mission in the Demon Slayer world, she happened to meet the Hat Guy, who had crossed into another world after time and space became chaotic during a battle. By coincidence, they discovered that they were both from Yokohama. And since they had already confirmed their relationship, it was about time to meet the parents.
As it happened, Mayu would turn twenty and come of age as soon as she returned, meaning she would be fully exposed to the public. Just how big a storm would this supposedly "out-of-nowhere" adopted daughter of the boss, Hanakain, stir up in Yokohama?
[Mayu was picked up by Professor Natsume. Her background has been changed, so look for the details in the story. Her ability is [Maximum Learning Ability]. The condition is that she must be interested in what she is learning. If she loses interest one day, everything she has learned will immediately be erased from her mind. Even if she studies it again, her ability will no longer give her a boost, and she will learn just like an ordinary person.]
[Read with caution!!! The story has been heavily altered, but the characters are kept as in character as possible.] Includes Demon Slayer (a little at the beginning, where the heroine learns various Breathing Styles), Bungo and Alchemist (cameos), and mainly Bungo Stray Dogs.
Theme: I could have sworn I was the strongest fighter around.
