When does Izumi Yuuka visit the Ryōzanpaku dojo to compete with Miu over Kenichi’s affection?

Kenichi: The Mightiest Disciple: When does Izumi Yuuka visit the Ryōzanpaku dojo to compete with Miu over Kenichi’s affection (and attempt to join the dojo)? I remember reading the arc in History's Strongest Disciple Tatakae Ryozanpaku manga (and I know it happens in the anime), but when does it happen in History's Strongest Disciple Kenichi manga? Or did I miss it? {:( } - (I'm at Battle 70 "Shinpuku Rengou Formation!")