Shy is Japan's new Hero.

Shy returns to school; she finds Iko Koishikawa, a girl whose injuries she blames herself for.

Koishikawa takes Momijiyama out on the town.

Shy faces off against Stardust for the right to remain a hero; to stand a chance, Shy has to discover what drives her as a hero and fuels the power of her Heart-shift bracelets; heroes from the Black Cross help manage the aftermath.

As Shy searches for ways to strengthen the power of her heart, she finds support and inspiration in unlikely places; begrudging assistance from Lady Black helps her understand struggle more as they help someone together.

Unilord sends Shy and Spirit on an urgent mission to the North Pole; there, they rendezvous with China's hero and work together to investigate the fate of researchers who had lost contact with the Arctic base.