Due to a careless mistake, god of wind Silphyleel unintentionally kills a 28-year-old man named Takumi Kayano. Unfortunately, Silphyleel cannot return Takumi to Earth. Instead, the deity reincarnates Takumi into the fantasy world of Etelldia. Equipped with an assortment of magical powers and bottomless inventory, Takumi spawns in the Forest of Gaia, where high-level monsters roam free. There, he meets five-year-old twins who, despite the dangerous environment, are still alive thanks in part to their extraordinary physical strength. Takumi decides to take them under his wing, naming them Allen and Elena. As the trio embarks on their grand adventure in Etelldia, their very existence may impact the world's destiny.

The very first Candy☆Boy episode. Twin sisters, Yukino and Kanade Sakurai, room together in the dorms at their high school, enjoying school life with their friends and one another. One day, Sakuya Kamiyama, an underclassman, seeks out Yukino, while Kanade learns from a friend that Sakuya has admired Yukino for a very long time. This innocent revelation sets into motion a chain of events that eventually lead to Yukino expressing her feelings for her sister.