The Silent Vow

Summary

My brother is a stoic, New York business tycoon who practices a vow of silence—strict, disciplined, and cautious.

I, on the other hand, am a chatterbox.

To win him over, I practice calling myself "sister-in-law" in the mirror every day.

While he meditates in seclusion at home, I spread rumors about him outside.

When he goes to Germany for business, I tell everyone he’s going for "German Orthopedics" (a slang term implying incestuous relationships, often used in anime/manga culture, here adapted to mean something scandalous).