"Rosier" is the third single by Japanese rock band Luna Sea, released by MCA Victor on July 21, 1994.

Guitarist Sugizo cited "Rosier" as one of the songs wherein he tried to replicate the "psychedelic feel of shoegaze bands" by using effects, "like playing fast with a wah-wah pedal, or using tape-echo and harmonizers.

As a staple of Luna Sea concerts, J throws his mic stand over his head and behind his back after finishing his vocal part.

A dominant feature is the camera work; a crane takes the viewer over the band 180 degrees from the front of its members, ending upside down at their backs, the opposite is also seen.

Instead of ending with the English phrase "I'm the trigger" as heard on the released track, the video's audio fades out while it climaxes with a shot zooming in to the coffin's supposed glass window and a hand reaches out grabbing the camera.

However, the phrase is viewable in the video as it is written in red on the white drumhead of Shinya's snare drum and as font during J's vocals.