There Were Times When I Wished You Were Dead is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The Emperor of Croisen hated Empress Yvonne. Enough that he’d wish for her to disappear three times a day. I don’t like the face of someone who looks just like the Duke of Delois, my enemy, but no matter how much I insulted her, her indifferent and aloof character stayed the same, which made me feel even more terrible. I didn’t care whether or not she disappears or dies. I was fine with anything as long as I didn’t see her face. The wish came true. When he no longer wished for it to happen.