University student Totonou Kuno (Masaki Suda) has been making curry in his apartment since the morning. The landlord of the apartment appears there with the detectives of the Ohtonari police station, Kenichi Endo and Yuto Ikemoto (Matsuya Onoe). When asked about his actions at 10 o'clock last night, Sei answered that he was making curry by himself. Then, Yabu informed that the body of Sagae Ken (Fujieda Yoshiteru) was found in a nearby park, and asked the police station to accompany him voluntarily.
Sei is heard by Yabu and Nariaki Aoto (Michitaka Tsutsui). Sagae, who was killed in the park, was from the same high school as Sei and attended the same university. In addition, some witnesses have seen Sagae fighting for arranging at the time of its murder. Therefore, Sei was a suspect. However, Sei is innocent in pursuit of the bushes. He argues that the sighting information is clearly his own.At night, Sei was released on the condition that he would be interrogated tomorrow. Sei, who went to have the mobile phone returned to the detective Seiko Furo (Sari Ito), finds out that she is a pet loss. I also heard that Ikemoto would soon become a father.The next day, when Sei goes to the police station, Furo Hikari and Ikemoto, who were ordered to take fingerprints from the bush, are in the interrogation room. Sei healed the pet loss of the bath light with words, and advised Ikemoto on how to work for his wife who is about to give birth. Yabu tells Aoto that such an arrangement must be the culprit.
On the third day of the interrogation, Sei gave hope to Furo Hikari, who was worried about his standing position in the station. Yabu comes there and tells him that the fruit knife that killed Sagae was found and that the fingerprint of Sei was detected.

Seiko Furo (Sairi Ito), Shigeaki Aoto (Michitaka Tsutsui), Yuto Ikemoto (Matsuya Onoe) and others were the first to notice the Inudo residence where Totonou Kuno (Masaki Suda) and others were confined. The criminal is in a hurry. At that time, passengers urged by the criminal to confess 'the heaviest sin I have ever committed' in the residence. Next to Rila Rouki (Hiccorohee), Megumi Kashiwa (Aimi Satsukawa), and Ippei Awaji (Yuki Morinaga), Yukihito Narasaki (Akio Kaneda) spoke. Narasaki, who committed suicide by his subordinates, is worried because his bereaved family has blamed him for himself. Sei who heard the story heals the heart of Narasaki with words like Lira and others.