"Furi" here doesn't mean "Pretending", it's short for "Furiwake", or "Distribution", and a reference to the term "Kyokufuri" which means "Min-max" (Distributing skill points unevenly). The title's a pun on the original work's title "Bougyoryoku ni Kyokufuri" which means "Min-max defense build", instead it's "Bougyo Zero Furi" meaning "Zero defense build".