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)

The accident gives Chinami a bloody lip, dents the car's bumper, and damages the guard rail. The group is escorted back to the city by the police. Upon arrival, Kōko gets slapped by her father, and the trip to Barcelona is cancelled. On the next day, Banri, Mitsuo, Chinami, and Nijigen meet with all of them taking responsibility. Banri feels the most at-fault for not keeping Kōko awake. Banri goes to Kōko's home to talk with her, finding Kōko unwilling to get out of bed. The accident reminds Kōko that she has acted immaturely despite being an adult. Banri tells Kōko that despite needing to grow up she needs to remain true to herself. Kōko tells Banri about a dream she had where she was riding in a car with Banri and at a place where they are told to stop the car, Kōko gets off and the car drives away, which makes her believe that if Banri should regain his memories that he would fall in love with Linda instead of her. Kōko's father enters her room and orders Banri to cook some ramen, while Kōko returns to bed.

(Source: Wikipedia)