Can someone tell me about a similar concept like this, it goes like this: The MC is I think living in the middle of the woods and then two children (idk one black haired boy and one yandere type girl towards MC) and then they are like protecting MC while pretending to be innocent in front of her, please tell me what manhwa is this T.T
https://www.mangago.zone/read-manga/the_witches_isle/
If it's a bit on the horror side then it might be 'the witches isle'
https://www.mangago.zone/read-manga/i_m_repaying_the_kindness_that_raised_me_with_obsession/
I thought it would be this one but realized you said black haired brother not sister
Someone already mentioned it but I do find it similar to this one
https://www.mangago.zone/read-manga/follow_the_bread_crumbs/
this one sounds similar
https://www.mangago.zone/read-manga/i_raised_the_villains_preciously/
Too cliche, too fast paced, too much harem, too kind to a fault rate, it only last on the beginning then went downhill from there. Rating 1/10