"Getsuyoubi no tawawa" 2016

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.

Cast:

Sayaka Harada
Ai-chan (voice) 

Junji Majima
Onii-san (voice) 

Ai Kayano
Kouhai-chan (voice) 

Yasuaki Takumi
Senpai (voice)