Saki adjusts to her new job over summer vacation. Taichi and Akiko notice that Yuta and Saki keep calling each other by their family names. Saki senses a change in how she feels about Yuta and wonders if she should describe it honestly in her diary.
Hmm, how about something 
like "Big Brother Yuta"?
ما رأيك بـ"أخي الكبير يوتا"؟
Wollt ihr euch nicht mit
„Bruder“ und „Schwester“ ansprechen?
¿Y si lo llamas "hermanito Yuta"?
¿Y si lo llamas "hermanito Yuta"?
Tu pourrais l’appeler « frangin »,
par exemple.
Magari potresti provare con "fratellone Yuta"?
Hum... Que tal chamar
ele de "meu irmão Yuta"?
Тогда как насчёт называть его братом?