Yamiochi Shitsuji ni First Kiss wo Ubawaremashita

Lady Isla Allandis, a noble lady on the brink of her social debut, is desperate to escape a contractual marriage. She encounters a handsome nobleman, Martin, seemingly the answer to her prayers. Eager for their first kiss to be flawless, Isla seeks guidance from Jade, her trusted butler. As they embark on 'practice kiss,' Isla and Jade feel the tension rising between them. Little does Isla know, Jade harbors secrets of revenge and a past shrouded in shadows. (Source: Pocket Comics) Note: First released in English, with the initial eligible release in Japanese followed by Korean, making it a manga by our standards.