Ruka Kayamori (Luminous Songstress)

Ruka Kayamori (Luminous Songstress) is a SS character in Heaven Burns Red.

Ruka Kayamori (Luminous Songstress) serves as a Buffer, one of 51 Buffer characters in Heaven Burns Red.

Ruka Kayamori (Luminous Songstress) has been featured in 4 banners since Dec 2025. Their most recent appearance was on Swimsuit Campaign Featured Recruitment (Aug 2026), approximately 40 days ago. Based on their banner history, the average gap between appearances is 119 days.

Ruka Kayamori (Luminous Songstress) was released on December 12, 2025. They were introduced alongside Erika Aoi (Touch of Improvement), Sumomo Minase (Precious Smile), Ichigo Minase (Chilling Elegance), suggesting they were part of the same content update.