PPPPPP, Volume 1: Mediocre Lucky (PPPPPP #1-7)

With one exception, the septuplets of the Otagami family are considered genius pianists. As they grow up, the family separates, and only Lucky, the mediocre sibling, goes to live with his sickly mother rather than perform alongside their talented father. As time passes, Lucky promises his dying mother to become a pianist, but how will someone regarded for so long as talentless achieve success?