that sister is not gay lmaooo she just genuinely hates jun for stealing all the attention from her and she has issues from getting bullied she outed him because she thought that maybe if she does that their mother wouldn't like jun anymore and would give her more attention instead. all in all shes terrible cant wait to see her redemption arc
shes feeding him two spoonfuls of peas is that all?
Yes he wants him to starve to take all his money at his funeral, on his grave she will write "painful teeth" so everybody will know that at least she tried to feed him but secretly she wanted his money and then she runs away to the prince which she makes fall in love with her but then she makes him eat only hard food so he will have painful teeth like his grandpa, then he dies the same way and she becomes queen, the end
the translation is incomprehensible