Sense and Sexuality by You Higashino [GN Adult]
Masatsugu Hanamura and Kuniomi Takakura are both Japanese nobility and heirs to two separate Marquis families. As childhood friends and rivals, they live hedonistic lifestyles. Their pastime is a friendly competition where they place bets to see who can win their target's affection first. Then one day, Kuniomi makes a passionate confession of love to Masatsugu and...!? What will become of their life-altering bet between these two beautiful men...!? A Taisho-era love story.
Story and art by You Higashino.
WARNING: This graphic novel is absolutely not for viewers under 18 years of age. Contains graphic violence and sexual situations. Viewer discretion advised. All characters depicted in sexual conduct or in the nude are aged 19 years or older. No actual or identifiable minor was used in the creation of any character depicted herein.