Hen na Chishiki ni Kuwashii Kanojo: Takayukashiki Souko-san (webcomic)
Takayukashiki-san knows many things that are way too weird(especially perverted things). With her, you will become a little wiser and a little more indecent.
A comedy manga that will satisfy your perverted curiosity!
A Girl Who Is Very Well-Informed About Weird Knowledge, Takayukashiki Souko-san