Yakezake wo Shitara Onnagirai no Koushaku ni Dekiai Saremashita

Violetta, the daughter of a duke, witnesses her fiancé, Ivan, and her best friend, Thérèse, having sex. The night he breaks off their engagement in broad daylight... "I can't take this anymore!!!!" In despair, Violetta drinks to drown her sorrows, but a man appears before her... zzzz. She wakes up to find a naked, handsome man standing next to her!?

(Source: Shueisha, translated)

Note: Includes one extra chapter.