I Changed Jobs to Avoid Becoming a Yokohama Corporate Slave [Crossover]

I've thought it over, and for now I'll focus on the modern setting. I've revised the later chapters, and they're all new chapters. Here's what happened. I was only fifteen, helping my little brother Nakahara deal with Port Mafia members who'd come looking for trouble, when I suddenly received a set of memories from ten years in the future. Ten years from now, some lily-white troublemaker will get bored and try to destroy the world, only to be defeated by the Tenth Vongola Boss from ten years ago, which is to say, the present. But none of that is what I'm concerned about. I was shocked to discover that in ten years, I'll have become a Port Mafia executive-level wage slave, worrying myself sick over Yokohama 365 days a year, with an insanely annoying bandage-wasting machine dragging me off to do hard labor. Giao. I thought that after being Solomon's close friend, Sherlock Holmes' morally ambiguous roommate, Da Vinci's boss, Qin Shi Huang's Imperial Preceptor, the King of France, and the lover of the Mistress of Heaven and Earth... after all those high-flying roles, I'd get to live a stable life. I don't want to be a wage slave anymore! Alaya! So I told my buddies and immediately made a run for it, heading to Namimori overnight to seek refuge with the Tenth Vongola Boss. Honestly, I wouldn't mind switching to Chaldea, the SPW Foundation, Passione, or something like that either [ . ] Meanwhile, Dark Era Dazai, who'd received his memories and been directly ordered by the boss to "pick up two people," asked: "...Where is she?" Chuuya, who'd only just received his memories, said: "...She jumped ship." 1. No shipping other pairings. There are only one-sided crushes :). Don't you love yuri?! [shouting, JPG] 2. First person. This time I want to write a high-IQ, high-EQ heroine, but she always dresses in masculine clothes and treats people like brothers. She almost never slips up [probably]. 3. Pairing... I don't know yet. The main story will still involve JoJo, Demon Slayer, Bungo Stray Dogs, Katekyo Hitman Reborn!, Persona 5, Danganronpa, FGO, and some historical spinoffs [ . ] 4. Some historical figures will be gender-swapped [for example, Solomon Lily], but their original-gender Servants will also appear [for example, Chaldea's doctor is still male]. Just a warning in case anyone isn't aware. Theme: There's no way I'm becoming a wage slave