I like your profile picture, broomfieA bit of a short manga but fun all the same. Could have they been normal siblings if the parents gave a fuck about Onii-chan? Perhaps then, Shizuku would have been able to treat her parents as human and not feel obligated to love Onii-chan in their place, but who really knows? Last chapter better have incestuous sex for the purpose of procreation; Onii-chan better not pussy out.
ive seen ridiculous displays of it in manga but this was way up there near the top for them/Whether you guys feel conflicted or not, she sure know how to assert dominance