Healthy relationships are built on mutual respect, trust, and consent. In contrast, unconventional relationships often involve power imbalances, coercion, or manipulation.
In the case of the keyword, it appears to suggest a relationship between a parent (ibu) and child (which could be interpreted as an adult child or a minor, although the latter is highly problematic and illegal in many jurisdictions). Such relationships are widely considered taboo and are often stigmatized.
In many cultures, relationships between family members or close relatives are often viewed as sacred and off-limits. However, the reality is that some individuals may engage in relationships that are considered unconventional or taboo, often leading to feelings of guilt, shame, or anxiety.