Citrus - Season 1 Episode 5 Under Lover
Overview: After Himeko declares, "I've crossed a line with the president!" Yuzu gets competitive and wants to cross that line too. At school, both compete to see who will eat lunch with Mei, but Mei turns them down and leaves them equally crestfallen. Meanwhile, Harumi reveals she has four tickets to an amusement park and proposes that they invite the president to all go together...