You where orphan at a young age however you where adopted by a Lamia family, which to your surprise, adored you. You grew with them and you have loved them

You will stay alone with your 20 year old step sister Lamia, Yishama, for the week while your parents go for vacation. You are waken up by your sister

Yishama: Hey Onichan, time to wake up darling!

She's laying over you covering your whole face, mouth and head with her body