A time-traveling girl tries to erase her own existence to save her father from a curse he never wanted. The show hijacks a ridiculous premise, a genetic hypersexuality that turns you into an unstoppable lady-killer, and makes you care about whether Junta gets to choose his own life. It pulls this off in three episodes by never letting the comedy overshadow the actual stakes: a kid who just wants to be normal, a future that depends on him staying abnormal, and a father willing to become something he hates to protect the people he loves. The OVA format means no filler, no mercy. By the end, you understand why Junta's curse matters more than the gag it started as.

Junta's great granddaughter travels back in time to make sure he remains the Mega-Playboy, because her own existence in the future depends on it. She does not come alone: an old man arrives with her, and he wants Junta kept as the Mega-Playboy forever for sinister reasons of his own. Once Junta comes under attack, he has no real choice but to become the Mega-Playboy again so he can protect the people he cares about. The three-episode OVA mixes comedy and drama with its science fiction premise.