Hatsune-Jima, renowned for its perpetual cherry blossoms, lost its magical touch two years ago, with the trees now blooming seasonally. Jun'ichi Asakura, a senior at Kazami Academy, enjoys the company of a diverse circle of friends. One stormy summer day, Aisia, a curious girl seeking magical knowledge to spread joy, mistakes Jun'ichi for her mentor. Despite his limited talents in sweets-making, she persists in her quest for magic on the island. Meanwhile, amidst the unfolding chaos, Kazami Academy welcomes new medical staff.