The Security Guard Center sets the stage for this drama that stars Mamoru Shinomiya, a newly-hired emergency responder. Together with his brilliant colleagues, all of whom have colorful personalities, they tackle one emergency after another with flying colors and restore the safety and security of their clients and the public.
| Actor | Role |
|---|---|
 Kento NakajimaMamoru Shinomiya | Mamoru Shinomiya |
 Chiaki KuriyamaKokoro Anzai | Kokoro Anzai |
 Kei TanakaShunichi Ouji | Shunichi Ouji |
 Kendo KobayashiShudo Sotokoba | Shudo Sotokoba |
 Keiko HoriuchiMamiko Minato | Mamiko Minato |
 Genki IwahashiYuzuru Shinomiya | Yuzuru Shinomiya |
 Sakamoto SatsukiKakeru Shinomiya | Kakeru Shinomiya |
| SSakamoto MitsukiWataru Shinomiya | Wataru Shinomiya |
| SSoji IzumiMinegishi | Minegishi |
 Atsuko TakahataWoman in elevator | Woman in elevator |
 Goki MaedaIdol otaku | Idol otaku |
 Rina KawaeiAi Ogawa | Ai Ogawa |
 Kanon TaniIchigo Makise | Ichigo Makise |
| NNaoto NishimuraNot listed | Not listed |
| RRino TochiharaNot listed | Not listed |
 Baijaku NakamuraNot listed | Not listed |
 Takaya KamikawaNonomura Shougo | Nonomura Shougo |