HUNTC-069 — "Big Brother, There's A Hidden Option... What Should We Do?" My Sister Is My Brother And I Have A High-Paying Hidden Option Part-Time Job! I Have A Super Naughty Sister! When My Sister Doesn't Have Enough Pocket Money...

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!