Did baseball player Keita Sano also make a gay video when he was student?

Could there be another pro baseball player with a gay porn appearance in their past? Rumors have circulated online that infielder for the Yokohama DeNA BayStars, Keita Sano may have gotten naked for a video produced by the Future Boy gay porn studio. We haven't been able to track down the original video to check it out, so it is hard to say whether there is any truth in the allegations at this point.