What happens if one day Kuroko Tetsuya's calm demeanor and deadpan expression was replaced by a violent and dangerous personality? Will Seirin be able to survive? New basketball rival arrives and the darker side of Kuroko Tetsuya appears... Disclaimer: I do not own Kuroko no Basuke/Kuroko's Basketball and all its characters they all belong to Tadatoshi Fujimaki. I only own the plot of this fanfiction.