Shunsui Kyoraku's Bankai comes from Bleach, the long-running anime and manga series about Soul Reapers, where a Bankai is a captain's final and most powerful release. Katen Kyokotsu Karamatsu Shinju is presented as a dark, theatrical ability that plays out like a tragic story, which helped clips of its activation spread through anime edits, reaction videos and Bleach fan compilations online. Fans still reuse it because the slow, solemn announcement instantly signals a serious escalation, much like the Mangekyo Sharingan reveal does for Naruto viewers.