Losing his father when he was young, and currently lives with his mother, the protagonist―― Morino Kento.
In his second year at Aketo Hanabue Private Academy, he goes on a school trip which takes him far away from his hometown, to a place filled with exotic tourist attractions.
But at that destination, Kento's cousin lives there, and it is a town where he is already familiar with, so he does not expect anything much, however......
Caught up in a commotion caused by Shishikura Ooga―― An extremely shy childhood friend who comes from the strongest lineage in human history.
Helping a girl in trouble, becoming a "hero" for Karakuchi Hibana―― An ojousama who visits the same tourist attraction by chance on the school trip.
Getting acquainted with Amaeda Chiwa―― A cute local student and his cousin's best friend.
Earning respect as a "hero" from Aijou Michiru―― A signboard girl in the shopping district at the tourist attraction.
What should have been a school trip with nothing to expect turns out to be an exciting trip filled with new encounters.
However, when such a trip comes to an end in the blink of an eye, parting ways with these girls (except Ooga), Kento feels a bit lonely.
But with the end of such trip―― from now on with these girls, comes the start of the new love stories.