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Misaki is a girl who is plagued with a condition that she can't tell anyone about... whenever her body gets wet, she becomes uncontrollably aroused. Every day after her bath, her body begins to ache hotly... One day, her handsome childhood friend and crush, Yuuto, asks her to become the manager of the swimming club. This definitely won't end well! But despite her better judgement, Misaki is unable to turn him down. Immediately after joining, the other club members douse her in water, and her body starts burning up in front of Yuuto...
Hidaka saves a woman from getting groped on the train, only to find out that the woman was actually a man!
Yuuma Tsugari leads a normal life...until a beautiful woman from another world appears before him, convinced that he's the hero she's been seeking! Can he help this gorgeous heroine?