Definition of 虚仮の後思案 (こけのあとじあん)

expression
hindsight is 20-20 (even for a fool)(obscure)
Other readings:
こけの後思案【こけのあとじあん】
Related Kanji
void, emptiness, unpreparedness, crack, fissure, untruth
sham, temporary, interim, assumed (name), informal
behind, back, later
think
plan, suggestion, draft, ponder, fear, proposition, idea, expectation, worry, table, bench