This episode is creepy. Seriously creepy.
A girl named Mami who sucks when it comes to sports but is determined to be good at it suddenly becomes strong and even beat the boys! Because of this sudden change, Kotaro suspects that this is a Gorgom plot... and he is right.
What's with Kamen Rider and creepy kids? I mean seriously, the Mami's facial reactions during the time she is under control of the MOTW is really scaring it. It didn't help that the one talking is not her, but the MOTW. It's scary and it felt like it came straight from The Exorcist. But to be fair with the girl, her father is kinda pressuring him to be better than the boys and making a deal with a Mutant shows that she is desperate to make her father proud.
Thanks to the Mutant's influence, she starts to act like she is superior than other, especially to adults. Seeing her bully adults is one unsettling sight. I mean seriously, it doesn't look right, especially the part wherein she bullies the guy in the ice cream parlor to give them free ice cream. Thankfully, Kotaro arrives just in time to try and stop her. This is when the episode gets a bit more creepy, and in some parts, scary. The way they shot the scene where Kotaro is looking for the girl is really scary, it helps that music and the way the girl cries adds up the horror vibe of the scene.
This is when the fun begins, after Kotaro found Mami and walked with her for a few minutes, she suddenly leaps and attacks Kotaro. The evil laugh and the way she smiled feels like it really came straight from The Exorcist. I know I am repeating myself with the comparison, but that's how the scene feels like, one horror film compressed in 24 minutes including the opening and ending credits! Heck, there are times in the episode that I forgot that I am watching Kamen Rider BLACK and feels like I am watching "Kotaro's Adventure to the Unknown"!
Even if the Mutant now controls Mami's body, there are times that she fights back, and boy, she knows how to fight back. Heck, if I am interpreting the scene correctly, she used her super strength to open some wires so that she can electrocute herself so that she can release the Mutant! Now that the Mutant is now out of the girl's body, it is time for Kamen Rider to defeat him. The fight scene is as always, it's really good. One thing I can't help but notice is that this is longer than your average final fight scene in the series as the fight scene almost finished playing the full version of the opening theme.
At the end, the Mutant is defeated, the girl is safe and more importantly, Mami's father learn one important lesson about pressuring her girl to overexert herself in doing things.