Rail Wars!

Welcome to K4!

Naoto Takayama is on his way to enroll in Japan's National Railway Central Academy (JNRC). Along the way, he encounters two classmates, Aoi Sakurai and Haruka Koumi. He befriends them and they form a group with Shou Iwaizumi, another classmate. They participate in various activities including shooting practice. One of the tests is coal-throwing. The four participate and are the only group to pass and succeed in attaining a speed of 100 km/h. During their final training on-site, they end up as a group and succeed in catching a pair of thieves. They are all granted participation rights to the OJT (On Job Training). (Source: Wikipedia)

Let Me Stay Like This for Just a Little While

Takayama and his friends are assigned to the Public Safety Force (PSF) under care of the Fourth Peacekeeper Squad Leader, Nana Iida. They observe as the PSF squad is deployed as a bomb is supposedly planted in the Yokohama Station. The four are assigned to keep guard and help at the Tokyo station, much to Sakurai's disappointment. The perpetrator notifies the defense force that actually the real target is the Tokyo station. They want ¥100 million in exchange for the disclosure of the bomb's location. Takayama and his friends are given the chance to search for the bomb before it goes off at three. They search the lockers without success. Iwaizumi suggests they search in the place they would least expect, a dog carrier at the lost & found center. They close off the area and Sakurai attempts to defuse the bomb with Takayama's help. Sakurai uses the liquid nitrogen from a restaurant to freeze the bomb's circuit with five seconds remaining. The perpetrator is arrested and Takayama is assigned to be the deputy squad leader. (Source: Wikipedia)

You Were Really Cool

Takayama's friend, Mari Sasshō, works in a restaurant near the defense headquarters. While eating lunch, she serves them and is introduced to everyone. She will also be attending the same Academy. The next day, Sasshō's friend Kaori goes missing and she requests the Defense Four's help finding her. They go through reports to no success and Sasshō ends up hearing Kaori's phone ringtone in the lost and found. She listens to an audio recording on the phone and hears the sound of waves and specifics to a certain station with her excellent hearing. They search through warehouses along the line and find her tied up as the witness of a crime scene. They take down the criminals and take Kaori to the hospital. (Source: Wikipedia)

I Think I Might Like It

The Defense Four are assigned as the JNR idol Noa Kashima's guards during a performance on the beach. After guarding her against a fan at the station, Takayama faints. As thanks, Kashima gives him her stamp collection book. During a practice session, flash paper (Nitrocellulose) is burnt as a threat to Kashima's performance. The following day, during the performance, the criminal, disguised as a member of staff, attempts to run on stage and stab Kashima. Thanks to Iida's quick thinking, they manage to play it off as a performance. Takayama gets stabbed but is saved by the stamp book in his chest pocket. In the end, it seems that Kashima develops romantic feelings towards Takayama. (Source: Wikipedia)

Quit Staring

After Takayama's morning shooting practice with Sakurai, the Defense Four (Takayama, Sakurai, Iwaizumi and Haruka) are tasked with finding the Tokyo station bomber's accomplice. Takayama and Sakurai find and pursue him, waiting for backup from the public safety force (PSF). They lose him after he exits the train and runs into a forest and end up spending the night at a station together. Thanks to this, Takayama misses a trip he was planning. In the morning, they find him attempting to board a train at the station. The bomber leaves behind a bomb on the tracks and gets away again. Takayama has Sakurai shoot the rock fall sensors to signal an approaching train. The criminal is later caught by the PSF and they arrive back safely. Sakurai insists on giving Takayama more training, irritating Haruka in the process. (Source: Wikipedia)

I'll Protect You

I Thought It Suited You

I'll Deliver It

Thank You

Will You Keep This a Secret?

I'll Go With You

Everyone is Waiting