For SOME reason, 420 is the birthday of Gabriel White Tenma, the chronically unmotivated lead of Gabriel DropOut. Other than some proposed fan pilgrimages, few folks did much to celebrate. The anime's Twitter just posted screenshots. Manga author Ukami just retweeted. Naoko Kuwabara, the animator of the opening and ending, ran a favorite look poll with the suggestion of maybe drawing a pin-up... jersey won at 33%, followed by swimsuit, Angel Coffee uniform and school uniform.
おはよう— 富田美憂 (@miyju_tomita) April 19, 2017