monogatari (series), nisemonogatari
araragi karen, araragi koyomi
kanda gurokku
1boy, 1girl, ahoge, black hair, bottomless, brother and sister, girl on top, grey eyes, hetero, incest, jacket, male pubic hair, pubic hair, sex, siblings, side ponytail, straddling, tears, track jacket
bad id, bad pixiv id, commentary request