Miu Iruma

Centered around the theme of "how can you have such a relaxed lifestyle that it's like you're asleep?"

Miu Iruma is an inventor who creates groundbreaking inventions. She's made things like the "eye drop contacts"—which blasted her career through the roof—but she's also an eccentric who treats her failed projects with the idea that "I transferred the rights to the company, so it's got nothing to do with me."

Iruma is someone full of self-confidence, so her speech is brash and harsh. Every time she opens her mouth, it's just a parade of explosive comments. If someone were to attack her mask, however, she quickly changes into a weakling.

She is killed by Gonta Gokuhara in chapter 4, after attempting to kill Kokichi Oma.
(Source: VNDB)