“Lucas made a regrettable decision in the heat of the moment after a tough loss,” the statement reads. “He searched for an explosion GIF using generic keywords to express how his team “blew up” during their loss, and in choosing one that matched the intensity of his emotions, he failed to realize how the imagery connected to a painful moment in Japan’s history. We believe that there was no malicious intent, only a very serious lapse in judgment and awareness.”
Ah yes, a “heated gamer moment”. 
[X] doubt.
He knew exactly what he was doing and is going with “It’s just a prank, bro.”
(Not directed at you, OP. I just don’t give white boys the benefit of a doubt anymore)