I get that this twin's theme is "Forgiveness" but lmao this is just dumb as fuck.
The concept isn't bad, forgiving the orphanage husband and wife. But the fact that the wife was barely characterized, giving her just one chapter focused on her for a hasty audience sympathy connection by showing that she had a fucked up life, and her entire screen time being filled up with her being a shitty human being just brings this entire execution down. I don't feel any sympathy or empathy for her, really wish author went a different route or just fleshed the wife out way more than just "yeah i'm fucked up but i had a fucked up past, too. HA!" and nothing else. Unlike the plot relevant characters, she's dull and serves as nothing more than cheap anger and shock.