Angelique Collet, the first Queen of the newly established Seijuu universe (Holy Beast Cosmos), originated from the Shinchou universe. Appointed to govern Seijuu, her duty was maintaining balance through the nine elemental Sacrea. Unable to sustain this alone, she succumbed to exhaustion and fell into a deep slumber. This event triggered a cosmic crisis, destabilizing Seijuu and threatening its collapse. She sent a distress call to the Shinchou universe's queen, Angelique Limoges, initiating the search for the Legendary Etoile to intervene.

Her prolonged slumber obstructed the natural awakening of Seijuu's guardians and disrupted the dimensional corridor linking Seijuu and Shinchou. During the Etoile's mission to restore balance, a malevolent Sacrea spirit embodying the chaos obstructing the queen's revival emerged. After the Etoile and Shinchou guardians defeated this spirit, Angelique Collet vanished without awakening. Her disappearance coincided with the destruction of the interdimensional corridor, leaving the Etoile isolated in Seijuu. Her fate remains unresolved, with no confirmation of her return or recovery.

Within broader franchise lore, Angelique Collet also appears as a central figure in *Angelique Special 2*, depicting her journey to become queen of the new cosmos Arcadia. This narrative parallels her role in the anime but provides no additional resolution to her post-disappearance status in *Koi Suru Tenshi Angelique*.