Sunset Rocket Umika researches how to build a rocket to get Yu home, but becomes discouraged when she realizes how difficult it would be. The next day at school, the vice president of the class, Haruno Takaragi, asks Umika and Yu if they were at the lighthouse last night. Umika lies, fearing that Haruno will inform the authorities of their trespassing. However, Haruna explains that she likes lighthouses in general, and that she also believes Yu is an alien. Yu tells Haruno about their dream to build a rocket to go to space, and Haruno agrees to help them...