Bad Baby wa Nakanai

The series revolves around four strangers who saved the life of a 10-year-old girl who jumped from the platform of a train. Years later, Kasumi Kado, a 28-year-old office worker who was among the four strangers, encounters the now-17-year-old girl again. The four strangers must reunite to save the girl once again.

(Source: Anime News Network)