My Younger Brother Wants to Be a Husband

After my mother remarried, I gained a younger brother. With a happy heart, I tried to be a family with Millian. No matter how badly he behaved, it didn't matter. Did my efforts pay off? I'm relieved that we've gotten quite close. Millian left a letter and went to war. It's been five years since Millian went to war. "Millian, I'm going to see you this time." Who knew my letter would end the five-year-long war? "Now I'm not your brother anymore," Millian flashed a document which said that he had been expelled from the family, "Sister, don't laugh with other men, unless you want to make me a murderer." Millian Edmore Rachel. No, now it's Millian Taylor. My younger brother returned as a man. It's sad that he's someone else right now, but what? He's going to be a husband? ...But why am I so nervous? I shouldn't do this. (Source: KW Books, translated)