bomber_grape
Artist known for his comics, which have a particular sense of humor. Might be Yamauchi Yasunobu, the creator of Danshi Koukousei no Nichijou, as per forum #47985.
Also the creator of the "I'm surrounded by raging lesbians!" meme
Japanese name: ボンバーグレープ (Bomber Grape)
Circle name: ハイパーサマーウォーズ (Hyper Summer Wars)