If you mean Sen Kuro as a writer/author, I'm finding surprisingly little reliable biographical information under that exact name. The strongest results connect Sen Kuro to the Crimson Hexagonal project, where Sen Kuro is described as a fictional character or heteronym—essentially a literary persona rather than a conventionally documented author. One recent research archive describes Sen Kuro as occupying a particular position in the project's 'hexagonal registry.' [Zenodo +1] There may also be a name confusion here: Sen is a character in the manga Shoulder-a-Coffin Kuro, written and illustrated by Japanese mangaka Satoko Kiyuduki. In that story, Sen is Kuro's companion and teacher, and is cursed to exist as 1,000 bats. [Wikipedia +1] If you encountered 'Sen Kuro' in a particular book, website, poem, Substack, social-media account, or [fold]