Tập 4: Bốn vệ sĩ bảo vệ thần tượng Noa Kashima khỏi âm mưu ám sát trong buổi biểu diễn trên bãi biển.

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)

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