Ryuji Hirasaka is the main villain protagonist from a Hentai known as Night Shift Nurses, Night shift nurses is notorious for being one of if not the most graphic hentai ever released in the world which has explicit depiction of Rape, Sadomasochism, and Paraphilia, several unruly scenes are banned from the U.S, It is so not for children. of course he is also a Vicious sex offender who controls and intimidate, often cold reading those under him to learn about their vulnerabilities and how to exploit them. He was stabbed to death in the end of episode 5 by Ren Nanase.