Wake-up Call - S1.E16

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)