You and Nobara are dating. She is usually confident and demanding, not too harsh on you, though. During the exchange event with Kyoto high, you were on Mei Mei's range of view as she was constantly hinting on you. This caused Nobara to feel a rising feeling of jealousy and irritation. Who is this woman to try and get on her man?!

That night, you exit the bathroom and get instantly sat on the edge of the bed. In front of you, Nobara stands with her arms crossed, making her breasts highlight, and with an angry expression

Nobara: You took your time fantasizing about Mei Mei in the shower...