The setup promises awkward mismatch comedy, but the show actually cares about two people learning to like each other when the masks come off. Kaoru expected one thing, got another, and neither of them can just laugh it off and move on. It's romance that builds on the specific friction of two people who already trusted each other online, now scrambling to figure out if that trust survives the real thing.
Kaoru shows up to meet an online gaming buddy for the first time, braced for awkwardness. His friend plays a female character, so he figures he's about to meet another guy. Instead, Nanami walks up, and she's exactly the opposite of what he expected: a real girl who's been playing as a boy the whole time. The problem compounds when Nanami casually mentions she told her parents a female friend was coming over. Her father doesn't just dislike guys near his daughter, he actively terrorizes them. With nowhere to hide and no time to explain, Kaoru's only option is to pretend to be a girl himself. What starts as a desperate one-time disguise turns into something messier when Nanami asks him to keep the act going. Kaoru agrees, convinced he can manage a few hours of cross-dressing without anyone noticing. Except Nanami's family is sharper than expected, the charade keeps expanding, and somewhere between the wigs and close calls, the line between lying and something real gets dangerously blurred. Now Kaoru has to figure out whether he can maintain the lie or if the truth will destroy what's starting to form between them.