The murder case about Waka continues which Sera though to know who the culprit is. Sera says that Rumi has something to do with the murder of Waka which she explains her deduction. Ran tells Sera that her deduction is problematic which she has Shinichi on the phone who solved the case by saying that it was Waka's ex-boyfriend, Kenya Setsu. Conan then explains the reason through his deduction, which it is also clear why Waka's corpse was winking because she has Kenya's eye contacts in her eye after the two were struggling with each other. Kenya later then explains the whole situation which Jugo hits Kenya's face with his elbow and took him away to the police station. Later, Ran and Eri meet which Ran explained the whole situation to Eri. Sera left the group, which Eri tells Ran that she have seen her on the phone earlier, which Conan wants to know who. Eri believes that Sera was talking to her older brother, if she have one.