My Younger Brother Wants to be a Husband

My mother remarried and I had a younger brother.
With a happy heart, I tried to be a family with my younger brother, Millian. No matter how hard he behaved, it didn’t matter.
Did my effort shine?
I’m relieved that we’ve gotten quite close. Millian left a letter and went to war.
It’s been 5 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 fluttered a document that he had been expelled from the family.
“Sister, don’t laugh at other men. Only if you don’t 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 a someone else right now, but what?
He’s going to be a husband?
….But why am I so nervous?
I shouldn’t do this.