Ep. 16: Run attempts various schemes at a water park to win Rito's affection before deciding on an idol career.

16

Rito and his classmates visit a water park, where Run tries to attract Rito's attention through multiple failed attempts. She uses a fishing pole, sneaks up on him while he gets ice cream, employs a vacuum near a waterslide, and utilizes fiber-eating fish to destroy other girls' bikinis. These efforts fail, leading to her depression. Montemitsu buys her food, and she later meets Rito's teacher to learn how to become a famous idol. After rigorous training, Run determines the goal is too difficult. When she is attacked by a group of people, Rito arrives to rescue her. Lala defeats the attackers using one of her inventions. The episode ends with the group leaving the water park, and Run declares that her fight for love has just begun.