Late review, I wish I don't need to reread this ever

I wish I can just haunt Rino's ex-husband and Hina to death. The nerve for them to STILL have a relationship with each other even after SHE DIED PROTECTING Hina. It's just so messy, I keep reading just to see these two's downfall. Rino isn't 100% innocent too but Hina could just have her revenge in a better approach, did she even tell what happened to her for her whole life growing up without her biological parents for her to do this much?