OOH IVE HEARD OF THAT !! monotone blue is about a cat named hachi, and because he's. A cat, the colors he sees are very limited. his world was pretty limited of colors before a Lizard came into it, who had a deep blue tail Lizardguy is aoi!Yay! Yay!Wahoo ! but when getting into it be careful cuz there's a scene depicting s/a around the 7th or 8th chapter </3