The anime follows a salaryman who has a chance meeting with a girl named Ai on the train. They begin to meet every Monday on the train, with the man serving as her bodyguard on the crowded commute while they chat.
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Sayaka Harada
Ai-chan (voice)
Junji Majima
Onii-san (voice)
Ai Kayano
Kouhai-chan (voice)
Yasuaki Takumi
Senpai (voice)