[Handjob Ejaculation Battle] The challengers are female college students Aoi (21, Faculty of Law) and Nanami (21, Faculty of Business Administration). The childhood friends attend different universities but keep in constant contact all year round. The only condition is to make them ejaculate at the same time. It's an incredible project where they can win a cash prize with just this, but making two guys ejaculate simultaneously based only on the sensation transmitted through their dicks is surprisingly difficult. Too early or too late means disqualification. Can they squeeze the semen out of the handjob boys' cocks with exquisite handjob techniques? Aoi and Nanami's challenge begins.