This EP marks the first release from a collaborative project between Tokyo based DJ/producer Iori Wakasa and Okayama's Keita Sano, born from a quiet resonance between their musical sensibilities.

In Japan, the academic year begins in April. Though born in 1988 and 1989, the two artists belong to the same school-year cohort under this system, yet within Japan's gengo era structure they stand at the symbolic end of one era and the beginning of another. The title 'A Shift of Eras' points to the moment when one era gives way to the next, suggesting not only the passage of time, but the subtle renewal of culture, perception, and values.

'Filtered Jewels' draws from the image of light shimmering like gemstones, or a space scattered with countless jewels, perceived through an imagined filter that gently alters the way the scene reveals itself.
'Heaven's Door' envisions the ascent of a transparent staircase floating above a sea of clouds, leading toward a quietly resting emerald-green door.
'Shocking Yellow', originally created in response to a specific request, incorporates carefully placed vocal samples while grounding the track in warm, rounded low frequencies and organic textures, shaped with DJ use in mind.
And finally, 'Time To Change' was reconstructed repeatedly with the hope of offering both solace and a quiet sense of encouragement, ultimately becoming a piece that reflects the underlying theme of the EP.