I transmigrated to the world of Detective Conan and replaced one of the original main characters, Kogoro Mouri. But something went wrong at birth, and I lost my memories of my previous life. I lived like this until my thirty-eighth birthday, the day Kudo Shinichi became a child again. That was when I recovered my memories of my past life, and then...
Then Kogoro Mouri received compensation from the System: a superhuman physique. So now he could start enjoying an easygoing daily life, right?
Kudo Shinichi: Please, Sensei, I’ll be staying at your place from now on!
[Mostly daily life, absolutely invincible, the System barely features, heroine one: Eri Kisaki, heroine two: Yukiko, others undecided. If you don’t like it, don’t read.]
Very good, keep up the good work, I hope I can write 200 chapters. This is the first one I've seen that has a concubine named Yingli.
Okay, the magic changes are pretty tough, I encourage you to score points.