Mayoineko o Tomeyou

Late at night, the chime suddenly rings in the apartment of a man who lives alone.
What if a beautiful girl, for some reason, is standing at the entrance soaking in the rain and asks to stay the night...?
She says that instead of the girl doing naughty things, she wants her to stay the night.
And the virgin man's heart is shaken.

[Translated From DLsite]