TV-Series
Description
My Sunshine is a popular idol singer with wide demographic appeal, maintaining a cheerful, girly public persona aligned with her idol image—though this presentation is partly performative due to industry constraints. To secretly pursue her genuine passion for the Battle Spirits card game, which clashes with her manufactured cuteness, she adopts the identity "Suiren." In disguise, she conceals her face with a red mask or hood and displays a notably more domineering, competitive, and haughty personality. Accidental reveals of Suiren-like traits as My Sunshine cause subtle visual shifts, including alterations in her heart-shaped pupils.

Raised in Hawaii with no mentioned family, her manager acts as her primary guardian. She owns a pet chameleon named Pink. A purple cornerstone pendant she discovered underwater during a later-depicted memory grants Pink speech and enables her access to Isekai World, where spirits manifest physically.

Her first encounter with Toppa Bashin occurs when he interrupts a pre-concert disappearance. Battling him as Suiren, she nearly reveals herself, but he fails to recognize her. After losing, Bashin impulsively declares himself her friend, sparking her curiosity. She later defeats both Bashin and Striker in a Sawaragi Gallery tournament, proving her skill. Publicly, as My Sunshine, she once denied enjoying Battle Spirits on television, distressing Bashin who believed she lied. This led to a confrontation where Suiren assured him his feelings reached My Sunshine.

A false tabloid report identifying Suiren as an elderly woman deeply traumatized her, worsened by Bashin and Striker briefly believing the rumor. Her battling suffered until peer encouragement restored her confidence. Later, witnessing Bashin mock Meganeko's diary provoked her anger. She challenged him to an apology battle; his lucky win prompted her, as My Sunshine, to share a fabricated television story about reconciling with her manager to indirectly advise Bashin on friendship repair.

Entering middle school, she befriended Kyouka Sawaragi and helped establish a Battle Spirits club. For a school-filmed Battle Spirits TV segment, she used an assigned yellow-themed "image deck" featuring cute spirits, conflicting with her preferred purple attribute. After losing a practice battle to J with this deck, she gradually integrated yellow cards into her main strategy. Concurrently starring in a stressful movie role, she battled Meganeko—who sought advice about Bashin—triggering Suiren's memory of finding her purple stone.

As a core member of Team Shomen Toppa, she competed in tournaments to rescue J from Thousand Spirits Group. She and Bashin won their initial tag match. Later, in the King Uchuuchouten Cup trap, she and Striker lost to Number Nine and brainwashed Number Eight. Captured for stone extraction, she was freed by J and others. During the final battle against Uchuuchouten, her purple stone depleted as a life resource, severing Pink's speech and her Isekai World access. An epilogue showed her throwing a concert heart to Striker, then visiting the Battle Spirits center with Meganeko, implying restored stone powers.

In the manga, key differences include revealing her identity to Bashin earlier after spotting her CD in his room, wearing glasses instead of a mask as Suiren, and battling the antagonist Smile alongside Bashin, Striker, and J.

Her card battling centers on the purple attribute, using spirits and magic themed around demons, curses, and the occult. Key cards include The SevenShogun Desperado, The SevenShogun Destlord, Chaos Draw, and Danse Macabre. After her yellow image deck assignment, she integrated cards like Arcanabeast-Ken, The Fairy Tanya, and Shining Magic into her primary strategy over time.