Ore no Ie no Koakuma Imouto
Mao-chan is a cheeky high school girl who loves to tease her virgin big (step)brother in naughty ways.
However, her true intention is actually...?
Note: the original series has been collected and published into 2 volumes.
Volume 1 (Up) contains chapters 1-20. Volume 2 (Down) contains chapters 21-42.
Little Devil Sister in My House
Ore no Ie no Koakuma Imouto (Shita)
Ore no Ie no Koakuma Imouto (Ue)
The Little Devil Younger Sister in My House