Rei Yasuda Unveils Full Music Video for 'Ruri Rocks' Anime Opening Theme 'Hikari no Sumika'

Anticipation is soaring as acclaimed artist Rei Yasuda unveils the full music video for 'Hikari no Sumika,' the electrifying opening theme of the highly anticipated summer 2025 TV anime Ruri Rocks. This visual spectacle promises to draw fans deeper into the vibrant world of the series, an adaptation of Keiichiro Shibuya's captivating manga.

A Journey into Science and Nature

Ruri Rocks introduces viewers to Ruri Tanigawa, a spirited high school student whose world revolves around the dazzling allure of shiny minerals. Her journey takes an exciting new direction when she encounters Nagi Arato, a brilliant graduate student specializing in mineralogy. Together, they embark on an enriching adventure, one that not only deepens Ruri's profound appreciation for the intricacies of science but also illuminates the breathtaking beauty of the natural world around them.

Behind the Scenes: Production Excellence

The anime, which made its grand debut on July 6, 2025, has already garnered significant attention for its meticulous production. Helmed by director Shingo Fujii and brought to life by the renowned Studio Bind, the series benefits from the narrative craftsmanship of Michiko Yokote, celebrated for her ability to weave heartfelt and compelling stories. The stellar voice cast features Miyari Nemoto, who perfectly captures the essence of Ruri Tanigawa, and Asami Seto, who lends her remarkable talent to the character of Nagi Arato, ensuring a truly immersive viewing experience.

Complementing Yasuda’s dynamic opening, the reflective ending theme, 'Sapphire,' performed by the talented Hana Hope, adds another layer of emotional depth to the series.

Building Anticipation

Prior to its broadcast premiere, Ruri Rocks generated considerable buzz with an exclusive advance screening held in Tokyo on June 28, 2025, drawing enthusiastic fans eager for a first look. The release of the full music video follows earlier creditless opening previews, which hinted at Yasuda's atmospheric vocals and showcased the anime's stunning natural imagery, setting a high bar for visual and auditory excellence.

A Unique Blend of Storytelling

Ruri Rocks distinguishes itself as a truly unique series, masterfully blending the comforting warmth of slice-of-life storytelling with an intriguing scientific perspective. It is poised to resonate deeply with audiences who cherish character-driven narratives underlined by a profound love of nature and the thrill of discovery. With the official music video now widely accessible, fans can fully immerse themselves in the anime's rich thematic essence, further amplifying excitement for the unfolding episodes and the scientific wonders yet to be explored.