My World Ended, So I Joined The Protagonists' Chat Group

Xu Xuanzhi was just an ordinary office worker, until a chat group notification shattered his mundane life: his world was ending in 48 hours! Worse, his own 'protagonist' destiny was a mere 500-word eunuch novel – a cosmic joke at his expense. But this wasn't any ordinary group. He was suddenly chatting with literal legends: Flame Emperor Xiao Yan, Demon Lord Fang Han, Luo Feng, Ye Fan, even Tang San! And his personal cheat? A 'Warcraft Mall' that sells powerful items for real-world gold, a resource he barely had. Now stranded in Xiao Yan's world, the ultimate underdog among multiversal giants, Xu Xuanzhi must use his paltry starting funds and a game-breaking shop to not only survive the looming group trials but somehow ascend beyond these cosmic titans… or be erased from all heavens.