​When Sugiyama and his tennis team embark on a summer training camp, little do they know what lies ahead. Amidst the picturesque remote location, Sugiyama’s step-sister Mio has a different kind of training in store for him. Meanwhile, their doubles partner Saeki becomes intrigued by their rigorous practice sessions and sets her mind on exploring a different kind of connection with Sugiyama. As the sun-drenched days unfold, passions soar and boundaries are pushed to their limits in this sizzling tale of desire and temptation. Get ready for a steamy summer adventure where love, lust, and tennis intertwine in unexpected ways.​