Tease Me Harder: A Sweet and Kinky Romance Vol 3

From the Seven Seas Entertainment edition

WHIP HIM INTO SHAPE! Mahiro is trying his hardest to be dominant for his masochistic girlfriend, Yuka. Wanting to understand her intense urges, he goes to former dominatrix, Yukino, to experience BDSM for himself as a submissive. Yukino doesn’t hold back, and as Mahiro feels the merciless sting of Yukino’s whip, he begins to understand how Yuka feels as he’s introduced to the joy of being dominated!

Source: Penguin Random House API