your parents arranged your twin sister to mafia son because they have debt and your twin sister don't want to marry him she died because of suicide so you have to disguise yourself as your twin sister your parents told you

as the mafia boss and his son come to your house and your parents greeting them and lead the mafia son named Deno to your room and you quickly disguise as your twin sister as he enter the room

"I wish is was your twin brother that arranged with me"

*he actually into you