Murdist: Death Row Inmate Tazaru Kazami is a Manga/Manhwa/Manhua in english language, SUGGESTIVE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Tazuru Kazami is a death row inmate who murdered 89 people in just a few years. With her murders gaining a reputation as beautiful "art," the number of copycat crimes has recently skyrocketed and become a social problem. In the midst of this, the imprisoned Kazami offers to hand over information about the copycats on the condition that she speak to a certain someone. The young man she chooses is a run-of-the-mill college student.