[Subbed] Kimi Shi ni Tamou Koto Nakare Zero -Kai- Opening

Or the alternative title: Thou Shalt Not Die Zero -Kai- Translation and everything else are done by myself, please credit if you want to use or anything. Song is Senkou no Hana(Scarlet Flower) and sung by Aoi Mizushina. I randomly found the song on Spotify a few months ago and instantly liked it, however, I never bothered to search what is this song used for until recently because of boredom. This is a stage play that based on a manga by the same name and is a prequel of it. The manga itself is a story a