In the World of Conan, From the Start, Art Is an Explosion

[True villain][Villain][Multiple heroines][Torturing Conan]

(The protagonist is a genuinely evil, trouble-loving jerk. If that's not your thing, please don't flame me.)

(And if you do, go easy on me. The author will make changes...)

Karasuma Hisashi, heir to the Black Organization, had a problem: he realized that the world he lived in was based on Detective Conan.

After taking out several detectives named Conan, he returned to Tokyo and discovered that the real Conan had only just appeared...

To avoid a doomed ending and reach the pinnacle of life, Karasuma Hisashi decided to lure the criminals around Conan who had nowhere else to turn into the organization. While he was at it, he would win over the heroes' side and recruit them too.

The plan was perfect, and everything went smoothly.

But as he kept winning people over, Conan's childhood friend ended up becoming his.

Conan: “I'm going to fight you to the death!”

Karasuma Hisashi: “The kid's really throwing a tantrum. Besides, I have Curaçao, Vermouth, Akako Koizumi, Gin, and your big sister Ran Mouri standing behind me.”

A lighthearted story, no angst.

The protagonist causes trouble, and Conan falls apart.

As for romance?

Karasuma Hisashi: “I'm not trying to win Ran Mouri over. I'm filling an emotional void.”

Curaçao: “What about me?”

Karasuma Hisashi: “You're mine.”

Vermouth: “What about me?”

Karasuma Hisashi: “You're my mom.”

Akako Koizumi: “What about me?”

Karasuma Hisashi: “You're my prisoner.”

Gin: “What about me?”

Karasuma Hisashi: “...Asai, come get your Gin!”