Naka ga Warusugiru Osananajimi ga, Ore ga 5-nen Ijou Hamatteiru FPS Game no Friend Datta Ken ni Tsuite.

"If I become stronger than you, Shintaro, you'll stay with me forever, right?" I'm the world's number-one ranked player in that popular FPS game. I'm aiming to become a pro gamer and wanted to compete in the national tournament... My accomplice, the world's number-two ranked 2N, turns out to be my childhood friend Natsuki. A big-tiddy streamer and a handsome, blue-eyed, thoroughbred homosexual also join in, forming a team with too many quirks. FPS love-comedy about shooting and being shot at with a childhood friend who's a sharp-tongued tsundere. (Source: Hifumi Shobo, translated)