Sister Bei! I’m Saki Chika, and I’m Entrusting My Whole Life to You!

The protagonist is Gin's younger biological brother, Kurosawa Saki, whose codename in the liquor organization is Seishu. He inherits all of Gin's strengths, but his personality is completely different. He firmly believes that human nature is evil, and that those who appear good are only pretending; goodness is like water, which benefits all things without contention.

Female lead: Vermouth

Gin: If you dare lay a finger on my brother, I'll send you to meet your great-grandmother right away.

Vermouth: You mean Saki? He's the only treasure I have in this world.

Kaito Kid: It's a pleasure working with someone clever.

Shiho Miyano: Is this guy really Gin's biological brother? They're so different!

Shuichi Akai: Seishu is my friend, but sometimes I can't tell whether he's an ally or an enemy. He's a liquor I can't quite figure out.

Bourbon: His methods are utterly incomprehensible! I don't agree with his way of thinking.

Some characters in this book may differ from their original portrayals. If you're particularly attached to the original, this may not be the book for you.

The protagonist can “change faces like a Sichuan opera performer”: one moment he's cold and ruthless, a domineering CEO; the next, he's fired up and acting like a handsome fool. He's also extremely jealous.

In his own words, and a standard line he refuses to let anyone dispute: “I am an ethical egoist.”

The protagonist has a special imperial ability that lets him enter a paradise he has imagined in his mind and talk with the Seven Demons.