
is this... is this incest?

I don't think so. She wasn't born into the family her mom married into it so for three boys to suddenly have a sister its no wonder they never saw her as a sister. Expectantly the oldest he was taking care of them as a father would so even more so he doesn't see her as a sister. Its not as rare as you think for step siblings to get romantic feelings for each other
now why is this still going grrrrr its gon be like true beauty with 60000 chapters ╥﹏╥ ╥﹏╥
At least this story actually has a plot and possible character development unlike true beauty
Bro that’s so real I was getting so annoyed while reading true beauty but this one’s got me hooked