Hon Ki Ni Naritai (Kodansha Aoi Tori Bunko 254-7 Naichai Soda Yo 7)

[Machine Translation] Compared to her younger sister Ran, who is undeniably beautiful and an honor student, her older sister Rin often feels inferior. One such example is the piano lessons that the sisters began attending together. Rin is still troubled by the fact that she was the only one to drop out of the class, even though she is now a junior high school student. Ran, on the other hand, is shocked to see Hirose, an upperclassman whom she fell in love with at first sight, grow closer to Rin... This is a summer story of love among the Ogawa sisters, Aya, Makoto, and the other four. From upper elementary school.

誰もが認める美人で優等生の妹・蘭に比べて、姉の凛は引け目を感じることが少なくない。姉妹で一緒に通い始めたピアノ教室もそのひとつ。自分だけ途中でやめてしまったことが、中学生になった今も凛の心にひっかかっている。一方、蘭は一目で好きになってしまった先輩・広瀬が凛と親しくなっていくのを見てショックを受ける…。小川姉妹に彩、真琴を加えた4人の、恋する夏物語。小学上級から。