Out of Curiosity

I tried this plot about a younger brother living with his older brother and sister-in-law, who are part of a 'common sense alteration' scenario. It had the 'cheating' tag, so I went for it. Can I steal his brother? lol Conclusion: Possible lol I thought it was NL-only, but they support that too...┌(┌ ＾o＾)┐ Is it more like brainwashing than altering common sense?