[こんぜさくひ, konzesakuhi](exp) complete reversal of values or ways of thinking (over time); What appeared wrong in the past now appears right; realizing and regretting the past errors of one's ways[Add to Longdo]
[つるかめざん, tsurukamezan](n) obtaining the respective numbers of cranes and tortoises from the total of their heads and legs; calculating the values of two unknown quantities from their unit total and the total of one of their attributes[Add to Longdo]