NHDTC-188 Rion Izumi, Kawakami Shizuku - Even a flat amateur girl tries on a man's swimsuit! It was supposed to be just that... but the boyi

Amateur girls take on the infamous 'Men's Swimsuit Challenge'! Four flat-chested girls take on the challenge! Aiming for a total prize pool of 1 million yen, they crossdress for the first time! In men's swimsuits! "Commemorative photo shoot," "extreme men's swimsuit," "infiltrating the men's restroom," etc. The missions get more and more embarrassing! Their hearts race as they feel the eyes of the general public! Will they be able to win the prize money!?