Heartcatch PreCure S01E04 - Is the PreCure Duo Disbanding so Quickly?

Tsubomi begins to fear that she is being a burden towards Erika in battle, causing her to worry that Erika will find someone else to replace her. However, she realizes that she is just as invaluable a partner for Erika as Erika is for her, and the two are able to combine their powers to defeat the Desertrian of a girl who is experiencing the same dilemma with her tennis partner.