After the bombing incident, Ichika's class abandons the Cinderella idea they had for the school festival and they decide to go with a restaurant, while Rin is starting to become preoccupied with her worries over Ichika's amnesia. They decide to have a contest to decide who will be the main cook, and because Ichika will be making the final decision of who wins the contest, there are too many contestants who all want Ichika to try their food so they split the contestants into smaller groups of two first. Meanwhile Rin is growing ever more worried about her position in the harem as Ichika's amnesia had eliminated her position as Ichika's second childhood freind, and he has forgotten the promise they made when they were kids.
On the day of the first part of the contest, Rin is paired against Nohohon, though she wins the group contest as do all the other main girls. Except Cecilia. Houki confronts Rin about her worries saying that Rin isn't using the dish she's best at making, and Rin confesses she's worried what would happen if her subuta didn't make Ichika recover his memories. Later, Ichika stops by Rin's room to ask her to help with cleaning his house which he was ordered to do by Chifuyu. (Ichika was maneuvered into asking Rin by Houki)
On a side note, you get a three-option choice here, and if you chooce "W-what reward do I get?" Ichika pats her head, causing Rin to break down into full dere mode. (why can't the harsh girls of the harem act like this more often?
)
The next day, Rin arrives at Ichika's house complete with homemade cookies and a genki greeting for Ichika, only to find Chifuyu answering the door, who bluntly reminds her she won't allow any "innapropriate actions." Rin realizes that Chifuyu told Ichika to clean their house in another effort to stir Ichika's memories. CHifuyu eventually says she has something to do and leaves.