Recognized by My Ex After Being Reborn - Chapter 27 - : 027 Are they really not familiar?

A high school student that has lived as a mob-character ―― Mimori Touka

One day, fate played a cruel joke on Fujino. When he woke up, he found himself in the world of Detective Conan. Now, he’s a high school detective with no parents, a four-story building to his name, and a barely sustainable career solving cases.Just when he was at a loss for what to do, a Professional System suddenly activated, allowing him to acquire real detective skills—through pay-to-win mechanics.From that moment on, he ditched the usual “Conan logic” and became a true rational detective, using real investigative techniques instead of convenient anime tropes.Q: Why do you, as a detective, know so many different skills?Fujino: Well, isn’t it normal for a professional detective to actually learn professional skills?

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates