El Kusaha
About
El Kusaha was actually her stage name, not her real name. She posted horror-related videos on popular video sites. She wore a swimsuit in her video "I Tried to Seduce the Ghosts at these Haunted Ruins", which went viral. As a result, she got carried away and quit her job. However, that video was deleted for breaking the Terms of Service, so she decided to move away from that kind of content. Her channel never really took off after that, but she came to be known as a nuisance.
She lost her life after directly interacting with the curse. Her remains were sent to the spirit world, ensuring that the curse she was subjected to would not spread to the world.
(Source: the manga's character introductions)