After reading The Bet: Study in Scarlet. I kind of liked seeing Akane as the villain without making her crazy. This is another Toaru Majutsu no Index fanfic only instead of a full on crossover like Return of The Warrior which is based off the kyoto arc of Rurouni Kenshin. This is based off of the Deep Blood Arc. Like Aureolus Izzard Akane attempts to rescue him only to find out that he has already been saved, she didn’t take it well.
I have a basic outline Ranma and Akane are sent to a Hagure Yūsha no Estetika/Quantum Destinies type universe and Ranma ends up having to sacrifice himself to save her. Maybe their usual arguments, or just because it was the only option. Either way Akane feels extremely guilty so adapts to this new world, and trains herself to rescue Ranma, however once she gets strong enough she finds that Ranma’s already been saved.
I have her escaping to china and mastering Meiyouken the same style im using in my martial arts college idea its basically a Hokuto no Shin Ken if it used the principles Alkahestry.
With Ranma instead of erasing his memory I was thinking of using martial arts calligraphy to do something similar to Kotonoha Nanase from gun x clover splitting his psyche into different personalities based off the seven deadly sins.
I haven’t been able to figure out who the hero would be yet however.