Yea that something I still not sure about, how can Nanobots send sounds to MC's phone, i think that is something that happen where Laura is, how she is moaning and gulping and flicking the bean, although that last sound sounded kinda wrong, it was an annoying ticking of wooden item against a desk more. Didn't sounded like a girl flicking her bean. Well I don't mind, but to me it seemed the MC didn't hear it, if he does then he really really stupid not to react on it, he didn't even knew she was playing herself when she asked him what he thinks she doing.