Amu Hinamori is a shy girl who struggles to make friends in part due to the rumors spread around school about her cool and spicy personality. Wishing that she could show everyone her would-be self, Amu wakes up to the presence of three colorful and ornately decorated eggs in her bed. Each of these Hearts Eggs houses a Guardian Character—manifestations of someone's would-be self and their dreams. With the aid of Ran, Miki, and Su, Amu now finds herself able to express who she truly is. However, things do not always pan out in her favor. The sudden appearance of Amu's Guardian Characters prompts the Seiyo Elementary Guardians, a student council-like group with each member possessing their own Guardian Character, to take notice of her. As someone who has multiple Characters, Amu is roped into being the Guardians' Joker, tasked with helping them find X Eggs—corrupted versions of one's Hearts Egg. As she becomes entangled in the Guardians' quest, Amu begins to uncover more about these mysterious Characters, the X Eggs, and the organization that seems to be at the center of it all.

All stars season of Show by Rock!! featuring all the bands from previous seasons.

In present times, Gods and Demons coexist together with Humans after the door between each of these worlds had opened. Tsuchimi Rin is a normal young high school student attending Verbena Academy, spending his days living peacefully with his childhood friend Kaede. Unexpectedly, one day the King of Gods, the King of Demons and their families move into be Rin's next door neighbors. Apparently the daughter of the Gods, Sia, and the daughter of the demons, Nerine, are both deeply in love with Rin after having met him in the past. Along with his playful friendship with upperclassmen Asa and his encounter with the silent but cute Primula, Rin has much on his hands dealing with the affections of each of these girls. Based on the eroge by Navel.