Takayukashiki Shoujo

Kamiwazumi Jun resides in a house with a shrine, where strangers occasionally leave odd items at his doorstep. One day, a naked woman appears unconscious outside. She identifies herself as a future robot sent to protect Jun, claiming he is the messiah. She is unbothered by being nude and pulls items from a dimensional pocket between her legs. Jun eventually accepts her story and must adjust to integrating her into his daily routine. This includes introducing her to a childhood friend who has feelings for him.