Aki Nakano (Riko) is suspicious of Sara Kiritani (Mizuki Kayashima) from the mysterious words left by Miyu Kurosawa (Yui Oguri). Ichika Yuda (Hana Toyoshima) comes over when she is picking up Sara's luggage in an empty classroom to reveal her lies. Ichika, who is fascinated by her Sara, wonders about her Aki's actions and becomes her quarrel. Aki's older brother and detective Hayato Nakano (Shuntarou Yanagi) was picking up at the school gate. And, with the news that flowed in the car, Aki approaches a certain 'truth'.
At that time, Kazuma Yuda (Taiyu Fujiwara), who was spending after school alone with Sara for the first time, makes a promise because she wants to know more about Sara. Kazuma, who decided to convey his feelings to Sara, meets on the roof the next day, but there is an unbelievable sight waiting for him ...!? 'Yuda-kun is a special person to me.' No, the end of the shock is-.

Ichika Yuda (Hana Toyoshima) has an accident and is unable to return to consciousness. Kazuma Yuda (Taiyu Fujiwara) and his father Masahiro (Masato Hagiwara) had no choice but to pray for recovery. If Ichika's testimony is true, then Sara Kiritani (Mizuki Kayashima) is the culprit who killed Aki Nakano (Riko), and all the 'aims' are revenge on Masahiro, who wrote the cult's article ... .. What was the word she said? When Kazuma is thinking, Sara appears in the hospital room.
On the other hand, Masahiro does not stubbornly talk about the incident 11 years ago. However, Kazuma finds important materials in Masahiro's room. It describes a former believer, Shohei Matsuo (Takashi Yamanaka), who was a witness to the incident. Kazuma decides to visit Matsuo. And what was waiting there-?!
'If someone believes, it becomes a truth, and the truth slowly disappears into the darkness.' Who can believe it?