When seventeen-year-old Lucien Haruto Maris — a socially awkward but brilliant prodigy with a mind built for strategy, games, psychology, and war theory — dies in an accident, he opens his eyes in a place far removed from anything he's ever known.

He's no longer in his own frail body... but in the muscular, wounded shell of a dying man sprawled in a muddy trench surrounded by the scent of steel and blood. The world around him is medieval — swords, castles, horses, dirt roads, and politics steeped in steel. But something is very wrong.

Here, women rule everything.

Kings are Queens. Generals are Matriarchs. Knights ride in plate armor with long hair braided in the colors of their house. Men? They are property. Spoils of war. Breeders. Pets. Playthings. Rarely educated, often silenced. Their worth lies between their legs, not between their ears.

Worse still: the body Lucien now occupies belongs to a rebel, a once-prized consort of a Duchess who betrayed the crown and paid the price. He should be dead. Instead, Lucien wakes up with a second chance — and in a world stacked entirely against him.

Armed with only his genius, his virgin awkwardness,combat experience of his new body and a deep knowledge of human behavior, Lucien must navigate a world where a smile from the wrong woman can be lethal... and a clever lie can buy him power. He'll play the fool, whisper poison in powerful ears, seduce with strategy instead of strength, and build a following of dangerous women who believe they control him.

They don’t.

They’re playing checkers.

Lucien is playing goddamn 5D chess.

Ethnicity: Half-Japanese (father), Half-Czech (mother)


Languages: Fluent in Czech, Japanese, English; conversational Latin (self-taught)


Appearance: Wiry build, pale, dark hair always uncombed, hollow-eyed from lack of sleep


Lady Ysara Valtieri(Alwin's body's "owner")


Hair/Eyes: Silver-blue curls / navy eyes


Figure: Elegant, hourglass, noble grace


Role: Duchess of the Valtieri House – originally "owned" Lucien's body


Personality: Cold, calculating, aristocratic, lonely


Characters