<page_title> List of Oricon number-one singles of 2017 </page_title> <section_title> Chart history </section_title> <table> <cell> "Seishun Dokei" <col_header> Song </col_header> <row_header> April 24 </row_header> </cell> </table>
Seishun Dokei reached number-one on the Oricon Singles Chart.