Call from the Dead.
Nikki watches as Yuzuriha and Taiju visit the grave. Gen, Chrome and Magma hide from Ukyo. Chrome starts a fire to let Gen and Magma escape, Taiju requests Nikki to hear what his friend has to say. Nikki shows surprise at seeing a phone, Gen impersonates Lillian Weinberg. However, Nikki asks "Lillian" how many CDs she's sold to know if she really is real. Senku tells Gen the right answer. Nikki, still not convinced, asks what Lillian's proportions are, after receiving an answer she realizes she's speaking to an impostor. Senku plays the recording of the real Lillian he received from Byakuya. Hearing this, Nikki agrees to cooperate with Senku.