We start the chapter with Luna taking advantage of the single-room toilet as she checks her matches in the matching app from the last chapter. Naoto needs to use the toilet really bad, and Luna has been taking refuge in it for quite some time. Naoto reaches his limit and knocks on the door, and Luna exits and apologizes for hogging the ivory throne, while visibly acting weird.
Naoto was about to unlock the flood gates, but he spots Luna's phone. He sees the matching app still open, and notices that there are 3 matches for Luna, which gave away that Luna is a registered user. He starts to question when Luna started using the app, but Luna started knocking on the door, asking if she left her phone in there. Naoto tells her that her phone indeed is inside, and Luna attempts to enter immediately to grab it.
Somewhere in the city, Naoto and Kawashina are taking a break at some benches. Naoto still has the app in mind, and figures that because of how flustered Luna was, it was something that she didn't want Naoto to see. Kawashina notices that Naoto is acting absentmindedly since morning and asks if something was bothering him. Naoto however couldn't tell her about Luna's usage of the matching app, and out of nowhere Mimi comes out with the steel chair of a statement that Naoto problem has something to do with taking care of Naoto Jr.'s needs.
Mimi joins the two, and tells Naoto that if he needs some taking care down under, she'll take care of it for him. The pace however gets interrupted by the sound of notification bells ringing one after another, and it happens to be from a matching app on Mimi's phone, the very same app that Luna used. Mimi tells Naoto that ever since she started using the app again, the notifications never stopped.
With the app in mind, Kawashina jumps in and reminds the group on Mimi's statement last time about Mimi "devouring" Naoto "legitimately", but Mimi answers back saying the app can be used for purposes other than finding a lover. Mimi goes on about how the app can be used to find someone to hangout with for food and drinks, essentially using the app for making friends, which was the case for Mimi this time.
Hearing this reassures Naoto, but Mimi continues that there is the chance of encounters going all the way to the bed in some circumstances. Naoto reacts to Mimi's statement, and Mimi asks if this is what was bothering Naoto. Mimi once again offers her help if that was the case, but Kawashina throws her hat in the ring and offers her help as well, considering what they already did that one time at Hiba Camp.
Naoto imagines the two naked in bed, but he overloads himself, and makes a brave retreat telling the two girls to stop teasing him. Some time pass and Naoto is seen still wandering the streets. He's lamenting on how he thinks Luna still treats him as a younger brother, how he got conceited with how things between them are coming along. Still deep in his thoughts, he sees Luna walking alone, and finds it as a timely opportunity to talk to her. Naoto however misses his chance as Luna nervously enters a building.
Chapter ends as Naoto finds out that the building Luna entered on her own was a grand hotel.