Golden Time - Season 1 Episode 7 Masquerade

Kōko tells Banri that she loves him, but before he can respond Kōko is arrested for stealing a bike that she used to catch up to Banri. At the police station, Kōko is cleared of any charges, and after explaining the reason behind her sudden confession, Banri reciprocates and the two officially become a couple. The next day, Kōko openly expresses her love for Banri as they walk to school, and their relationship is met with disbelief from Nijigen, and mild surprise from Mitsuo, who has dyed his hair blonde out of depression from being rejected. When Chinami comes to greet them Mitsuo flees, and Chinami says that he has been avoiding her, while explaining the reason she rejected him was because his confession was made in public. Linda soon appears, and Banri flees, noting that he has been avoiding Linda since their last conversation, despite her constant attempts to speak with him again. As time passes, Banri and Kōko enjoy their time as a couple, but Banri continues to ignore Linda, which upsets her, and causes Nana to take notice. One day, Banri is called back to his apartment because of a plumbing leak, but when he arrives he meets Nana again, who reveals that she is his neighbor, and that she faked the leak to get him to meet with Linda. Back in Banri's apartment, he apologizes for his behavior, and the two rekindle their friendship, just as Banri gets a call from Kōko who worries that Mitsuo might be in trouble. (Source: Wikipedia)