The "rus" suffix in your query likely refers to the popular Russian-language covers of the song. Several well-known Russian "fandub" artists have released professional-quality versions of "Crossing Field":
"" is the iconic first opening theme of the anime series Sword Art Online (SAO), originally performed by the Japanese pop singer LiSA . Released on August 8, 2012, the song became a breakout hit, peaking at #5 on the Oricon weekly charts and remaining a staple of anime music culture for over a decade. Song Profile: "Crossing Field" Artist: LiSA (Risa Oribe). Composer/Lyricist: Sho Watanabe. Arranger: Toku. Anime Tie-in: Sword Art Online Opening 1 (Aincrad Arc). Russian Covers (RUS)
The lyrics of "Crossing Field" reflect the journey of the series' protagonists, Kirito and Asuna. It explores the transition from a "cowardly past" to finding strength through a "miraculous encounter" with another person. Musically, it is a high-energy J-Pop track with rock elements that mirror the intensity of the death-game setting in the Aincrad arc.
: A metal-influenced rendition known for its powerful vocal performance by Hono. Key Themes and Meaning
: Released a highly popular cover in early 2023 with lyrics translated to maintain the original's emotional weight.
: One of the earliest and most famous Russian versions, often referred to as the "TV Version".