A monster story from Rustle? Now ain’t that a surprise?

Sister insists in going to the beach with brother and his friends, but apparentely they get so jealous, that end up having sex with each other.

Collection of short stories: Vol 1: 1. DoPing! Unable to "Get it up", Kenji orders a "male enhancement" drug from questionable website. The only problem is, when the time came, Kasumi drank it by mistake ...

1. Watashi no Ikenai Onee-chan (Onee-chan Does Wrong Things) 2. Watashi no Abunai Onee-chan (My Risky Onee-chan) 3. Watashi no Itoshii Onee-chan (My Lovely Onee-chan) 4. Catch☆Love 5. Catch☆Love2 6. Fuwa...

1. Warm Onee-chan / Attaka Oneechan (あったかおねえちゃん) 2. Promise Me, Onee-chan / Yakusoku Oneechan (やくそくおねえちゃん) 3. Everyone's Big Sister / Minna no Oneechan (みんなの�...