Natsu-iro Kiseki - 1x06 - 第6話「夏海のダブルス」- Followmy.tv

At Natsumi has her hands full with tennis, studying and looking after Daiki whilst her mother's away, Yuka, Saki and Rinko make a wish on the rock which causes Natsumi to split into two. Whilst obviously displeased with the arrangement, Natsumi starts putting good use to her doubles to get things done, with one Natsumi doing tennis practise and the other doing homework and chores. However, as the day of the doubles match comes, Natsumi notices her tennis-playing double is pushing herself too much to become stronger. As Natsumi calls to her double to come to her senses, the magic wears off and the two Natsumis become one again. Using both the training one Natsumi went through with the strategy the other learnt from Saki, Natsumi manages to put up a strong performance. Afterwards, the girl attend a festival to send off their wishes.