Tawawa on Monday (2016–2021)

Name: Tawawa on Monday
Genre: Animation, Comedy
Cast: Sayaka Harada, Junji Majima, Ai Kayano, Yasuaki Takumi

Anime series · Animation, Comedy · 2 seasons · TMDB 6.5/10

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)).

Not on a subscription app in India right now.