Superficially it appears that this anime does nothing more then pander to fan service; doling out the stereotypes of buxom ladies with peanuts for brains etc etc; but no.
It explores the more unseen, hidden and ultimately more valuable; the goodness within ourselves that surfaces when we are faced with our deepest fears and hurts.
Two people face excruciating pain in their own way; a working young man, who only has eyes for his beautiful and enigmatic boss. When he works up the courage to confess his feelings for her, she summarily dismisses him saying that she was in love with another man. He, dejected, on returning to his miniscule home, finds a high school girl all alone and shivering in the cold under a street lamp on a junction.
Then begins a poignant tale of courage, goodness and reconciliation.
He takes the girl home, feeds her and shelters her, seeing in her the fragile, confused and frightened thing that she is. A need to protect and nurture her arises in his heart, going so far as to berate and threaten her with expulsion into the streets again should she attempt with him what all men in Sayu-chan's post-run away life had done. Using her body as a bargaining chip to cover her expenses. Thus he gruffly but lovingly restores again self worth in her eyes and urges her to confront and overcome the ugly bitterness that had caused her to run away in the first place.
Unbeknownst to him his act of kindness transforms him for the better too.
Full circle; he discovers the beautiful boss had actually rejected him out of "gut feeling" that it was not the right time! Now we know there are three, no, four hurting people in our story!
Lost your faith in there being goodness in people? You might just meet the one meant to steer you back to the path to being a better person and feel a fountain of goodness bubbling out of your own soul!