A relaxing vacation for Aika takes an unexpectedly stressful turn when a master manipulator appears on the scene to spoil the heroine's fun in the sun in Project A-Ko creator Katsuhiko Nishijima's panty-fueled anime adventure. Seduced by a sworn enemy in disguise and determined to survive with her heart and inhibitions still in tact, Aika draws arms to take on her nemesis and get back to the poolside before summer draws to a close.