No kidding. This Kouko lady kinda reminds me of Shoko from BakaTest in terms of her obsessiveness towards a man. And the Mitsuo guy also reminds me of Yuuji from the same series since both of them always being stalked by an obsessive girl.
This episode is not bad though, since it’s an episode debut for sure. I kept assuming Kouko’s voice sound like Chie from Persona 4 lol since both of them have the same voice actress, Yui Horie.