I have a super naughty little sister! When she doesn't have enough pocket money... she massages me and begs me for money in a sweet voice! I have no choice but to give her 1000 yen pocket money for a light massage, and she gently approaches me and whispers, "There's also a hidden option?" I'm skeptical, but I order the hidden option! Then my sister does something naughty... Before I knew it, she'd inserted it with all the hidden options on! I was completely sucked up by my little sister!