今日も児童館に、あのお姉さんがやってきた。僕らは嬉しくて、凄く楽しみなんだ!また、僕らが知らない事を沢山教えてくれるからね。この事は僕らだけの秘密だから、絶対に他の仲間には教えないんだ!だってそれがお姉さんとの約束だから。 The same girl came to the children's center again today. We are so happy and excited! She will also teach us many things we don't know. This is our secret, so we will never tell anyone else! Because that's the promise we made to the girl.