A member of the Manga Society, Takayanagi is on friendly terms with the Genshiken members and is seen conversing with them from time to time on various matters. In one notable instance, he finds himself in the unenviable position in the middle of the battle between the girls of his club and Ogiue, who had attempted to join. He is much relieved when the Genshiken takes Ogiue in, as the other girls in Genshiken are already hated by the Manga Society girls for various reasons.