Well i use incest tag, but not BL. Cs they like each other in someway. Though they are mentally unstable BBCO
But more than liking each other Jahea relayed on her brother because he didn't want to be alone and made his brother relay on him. The little brother (I don't remember the name) was possessive with him because he didn't want to be alone either. That’s not love or liking each other. Just my opinion.
People use for tag for this manga "BL" and "incest" Did they even read the full story? This makes me kinda made because its such a great story.