Mysterious Girlfriend and Boyfriend.While out shopping, Urabe meets up with Tsubaki's sister, Youko, who takes her to a coffee shop, where she talks about past love crushes and asks about having a boyfriend. She mentions that she promised her deceased mother that she will take care of Tsubaki until he finishes his studies, and so does not have time for romances. Later on, Urabe asks Tsubaki to go to his mother's grave next Sunday and pay their respects. Urabe meets with Tsubaki and he's surprised to see her very formally dressed. After paying their respects and talking about Tsubaki's mother, Urabe wants to "feel" Tsubaki's memories about his mother and they decide to simultaneously exchange drool while Urabe touches the gravestone. Urabe and Tsubaki both end up shedding tears and they feel that their bond has deepened as they continue to walk off talking and laughing.