Tenshi no Shippo Chu!

Recap: A kind-hearted young man named Mutsumi Gorou, who loves animals, has the most unfortunate things happening to him: the place where he works goes bankrupt, or he bumps into a signboard as he walks in the streets.

The poor soul is heavily burdened with bad luck.

However, his life completely changes when he meets a fortune teller, and receives a mobile phone with the power to call upon Guardian Angels, that just happen to be a group of cute girls — who are actually the reincarnations of the pets that the young man had once taken care of, now back to repay his kindness.

(Source: AnimeNfo)

A year later, Gorou has found a career and is going to school to become a veterinarian.

The twelve angels have sworn not to use their powers as they continue to live with him.

There are new problems to deal with as they grow together as a surrogate family and grow up.