|S2 Episode 9 - Stray Cats Overheat|
Kotaka happens to meet this new red haired character, Yusa Aoi. She's reading the test score rankings and looking annoyed. Kotaka talks to her and finds out this person considers Sena her rival, and she hates that Sena is always beating her at everything. When he goes and asks Sena about this girl, she says she doesn't even know her.
Yusa also thought that Kotaka was Sena's fiancee. In fact, everyone at school seems to be under this assumption because of Pegasus going around talking about it non-stop. Later, Kotaka sees Pegasus at his school and officially tells him thathe's wrong about him and Sena's relationship.
The next day, Sena goes to talk to Kotaka in private in the church, and she reveals that she accidentally made her dad think that she was getting married because she kept referring to wanting Kobato as a little sister. Then she reveals an even crazier twist... Apparently Sena and Kotaka knew each other when they were just toddlers, and their dads put them into an arranged marriage back then. Both of them agree that none of this matters, and they should remain as friends like nothing happened... They tried to keep it a secret from Yozora, but as soon as they went back into the club room, Maria mentioned that the two of them are getting married, and that forced them to reveal everything.
Yozora is now devastated, and looks like she's given up all hope... Sena still thinks that the past doesn't matter and Yozora is dumb for putting so much importance on it. The club goes on continuing to film their movie while Yozora is in a daze... Later, Kotaka learns from Kate that the script that Yozora wrote was directly copied from an existing movie...
lol Yozora is so useless, no wonder she's given up hope after losing the only advantage that she had over Sena.