"The initial installment of Candy☆Boy introduces us to twin siblings Yukino and Kanade Sakurai, who reside together in their high school's dorms and revel in their school experience alongside their comrades and each other. During one fateful day, underclassman Sakuya Kamiyama approaches Yukino seeking her out, while Kanade gets wind of the fact that Sakuya has been harboring feelings for Yukino for quite some time now. This unsuspecting disclosure sets off a cascade of occurrences that culminate in Yukino eventually confessing her romantic affection for her sister."