the more i read this the most i hate the "sis"
what an annoying character, i wish i could friendzone her and end her meddling
yuki and cousin ftw they are lot more chill
edit: now that i finished reading, welp, i really tho i would have the option to not go with the sis route, seeing how other girls had so much content, but it was forced anyway, i wish i could just pick 1 of the others and have separate routes, but oh well.
melody at least was cool, not like this one.
will give another read on an later update, to see if i just missed the point where you deny her or not.