So I was introduced to Tokyo Ghoul by watching the anime. I recently started reading the manga and was surprised when I saw this on the character profile on the back-lid of the front cover of Tokyo Ghoul volume 14 (the final volume before :re):
I know it is implied that Eto is Takatsuki Sen in the anime and manga, but I don't recall anywhere in the anime where it is revealed that Eto/Takatsuki Sen is the One-Eyed Owl. I also don't think I recall reading in the manga that this was the case (until I saw this image).
Did I miss something? Is Eto/Takatsuki Sen the One-Eyed Owl?