Harenchi no Susume

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!

(Source: Media Blasters)