I woke up as the second male lead's sister in a steamy BL novel!!

Lily Janssen suddenly wakes up in a hospital after taking a bath, and someone is saying he is her brother, Daniel Janssen! The problem is that Lily was an orphan and had no family members. Then, another guy arrives and introduces himself as Lucas Gray, her best friend! Lily has never met these people before, but then she remembers—those names sounded like the characters from the steamy BL manga she was just reading. What on earth is happening? ---- Follow my Instagram @imsquideli if you like my books~