This Beautiful Girl I Met in the Rain Is My...

Young Shouta is running errands for his grandfather in the countryside when he's struck by a sudden downpour and forced to take shelter at a nearby temple, where an alluring woman is also waiting out the storm. Not wanting him to catch cold, she invites him inside, and things get steamier than he bargained for once she begins to strip him down and warm him up with her supple body. If only naive Shouta had a clue as to the girl's true identity...