ore no imouto ga konna ni kawaii wake ga nai
kousaka kirino, kousaka kyousuke
ootsuka kotora
1boy, 1girl, aged up, breasts, brother and sister, computer, grabbing, grabbing another's breast, greyscale, hand on shoulder, hetero, incest, laptop, large breasts, long hair, monochrome, siblings, sitting, skirt
doujinshi