Nara! Karasuma! Harima!.At a waterpark, Tenma feels jealous for her friends (Eri, Mikoto and Akira), since she is the only one without a company there. She soon runs into her classmate Kentaro Nara, who offers to make her company. Even though Tenma accepts at first, she soon remembers Karasuma and, not wanting to betray him in thought, she resorts to only have him teach her to swim. They then later meet up with Nara's friends (who were the ones courting Tenma's friends) and, as they ask them out on a date, the girls proposes a challenge: if any of the boys win, they will all go out to the beach together. The scene then shifts to a rainy day. Without an umbrella, Tenma manages to find shelter, and is startled to see Karasuma already there. Later on at school, summer vacation is approaching and Harima listens to the girls about them having to accompany Nara's friends to the beach.