Rokka Wan, a young witch from the magical world, begins her story at age five. She specializes in illusion magic, specifically transformation, enabling her to adopt older forms. Driven by deep affection for Ichii, she follows him into the human world to take part in the sorcery examinations. Her assigned examination partner is Gô, who also acts as her caretaker and butler, charged with her protection by her father.

Rokka frequently uses her illusion powers to transform into a mature version of herself, hoping to win Ichii's romantic affection, though her attempts consistently fail. Her persistent jealousy fixates on Nina Yamada due to Ichii's closeness with her, leading Rokka to frequently insult Nina and interfere in their interactions.

In the sequel, *Modotte! Mamotte! Lollipop*, Rokka returns to the human world alongside Ichii when he undertakes the second phase of magic examinations. Though ineligible to participate herself, she resolves to support him. By this point, her overt jealousy toward Nina lessens, though distinct fondness remains absent. Her demeanor retains a bratty quality, contributing to her comedic portrayal alongside her relentless pursuit of Ichii.

A bonus story within the seventh manga volume, titled "I Love You My Darling," depicts her future: after over a decade of unwavering effort, she successfully marries Ichii. The sequel's epilogue confirms they have a daughter named Itsuki. Her character evolves from a jealous rival into a more supportive figure who ultimately achieves her long-standing romantic goal.