東京へ(とうきょうへ)奉公に(ほうこうに)行く(いく)自分を(じぶんを)見送りに(みおくりに)来てくれた(きてくれた)弟たちへのお礼(おれい)のため

At that very moment, the girl leaned out of the window and threw five or six warm, sun-colored mandarins toward the boys. She was on her way to Tokyo for domestic service, and this was a token of gratitude for her younger brothers who had come to see her off. Inst意 at once, the boredom and displeasure in my heart vanished, and warm tears welled up in my chest.