How to Become a Boss Without a Split Personality

I, Miako, have always had a golden dream: to follow the will of my brilliantly spotted octopus dad and build a beautiful kingdom of Italy together! Then Miako got stabbed in the back by the octopus BOSS. But I was reborn into the Millefiore family! I have to let the whole world know that our princess is an angel! And then he got stabbed in the back by the family BOSS again. Miako fell into deep thought. He understood now. Whether it's a split personality or a parallel world, having a many-faced mafia BOSS never ends well! After transmigrating yet again, he opened his eyes and struck first, killing the BOSS of this family... Wait, is the one trying to take over my body actually my biological father? Scumbag dad! Miako spat with contempt, then suddenly realized there was another soul in this body. "Good afternoon." The body's original inhabitant, Nino Yuren, greeted him politely. Ah... Hadn't he just become a person with split personalities?! Renaming himself Nino Yuto, Miako learned his lesson and decided to flee this terrifying mafia life with Ren. First, let me check the memories of the scumbag dad whose soul I swallowed. Maybe there's a billion-dollar inheritance or something I can claim... A distillery? Bewildered, Nino Yuto happily rushes toward his new life as a despicably rich man. Why does this billion-dollar inheritance come with such a huge mafia organization that calls me BOSS?! Nino Yuto's eyes went dull as he learned the truth. One body, two souls. Two male leads. Probably no romantic pairing. No breaking up canon couples. A crossover of Detective Conan, JoJo's Bizarre Adventure, and Katekyo Hitman Reborn (the worlds do not merge). Theme: I recommend that detectives keep their distance from me.