Luminous! Shining Stream! (ルミナス！シャイニングストリーム！ Ruminasu! Shainingu Sutorīmu!?) is the official transformation phrase used by Shiny Luminous in Futari wa Pretty Cure Max Heart. To activate the transformation, Hikari needs her Touch Commune, transformed from fairy mascot partner Pollun.
Shiny Luminous: 輝く生命、シャイニールミナス！
Shiny Luminous: 光の心と光の意志、総てをひとつにするために！
Hikari: Ruminasu! Shainingu Sutorīmu!
Shiny Luminous: Kagayaku inochi, Shainī Ruminasu!
Shiny Luminous: Hikari no kokoro to hikari no ishi, subete wo hitotsu ni suru tame ni!
Hikari: Luminous, Shining Stream!
Shiny Luminous: Shining life, Shiny Luminous!
Shiny Luminous: The light's heart and the light's will, for the sake of uniting all as one!
Holding the Touch Commune in her right hand, Hikari first waves her left hand across the Commune to activate it. She then lifts up her head and shouts out the transformation phrase "Luminous! Shining Stream!". A golden stream of light could be seen rising up to the sky behind her in this scene. Golden light then shines from her chest, and clouds of gold dust whip up from the ground to surround her.
The hairtie and hairpins then disappear and her braids start to unravel. Close-ups of her costume are then shown, focusing on her sleeves and skirt. The large bow at her chest then forms, and her hair, which has changed shade of color, is shown to lengthen.
The pink silhouette of her Heart Baton in Heart Mode then spins down from the sky and into her hands, before exploding in golden light. Luminous introduces herself as the camera spins around her, and stretches out her hands as the Heartiel Baton silhouette explodes in pink light. She then speaks her introductory speech as golden light surrounds her. At the end of the sequence, the Heartiel Baton silhouette zooms towards the camera and the winds die down around Luminous.
- This is the first individual transformation followed by "Skyrose Translate!".
- Hikari's transformation to Shiny Luminous was first shown in episode 5 of Futari wa Pretty Cure Max Heart.
- 4 different versions of beginning sequences have been shown for Luminous' transformation, each featuring her in different clothes. Sequences with her in winter school uniform, summer school uniform, civilian clothes and her Tako Cafe outfit have been shown.
- In shortened sequences, the scene with the unbraiding hair is not shown.