When I drew this I was into a manga called 'Gravitation' by Murakami Maki and in it the main character and his best friend form a band called 'Bad Luck'. I designed this sort of to look like a two-person band poster (Lina-chan's the vocal in this case, Youzen's eitehr a guitaris or an electric piano player). I had a lot of fun designing this (I know it doesn't look like much but I racked my brains thinking up of what to do.) There was also a version of Youzen's facing forward and Lina is facing side ways(op. of above) but I threw it out, didn't like it.