The Primordial World's Big Brother Boy Band! [Crossover]

Sang Xia is the last-ranking member of a third-rate girl group. After beating the senior members ranked above her in a game, she gets mercilessly mocked by everyone. Sang Xia: Do none of you have any sense of sportsmanship!? Forced to take a break, Sang Xia curls up in her apartment, planning to find a couple of games to lose herself in. Then she discovers a new game on her phone called The Prehistoric Brother Squad! System: Thank you for becoming the 999th beta tester of this game. Please draw your first exclusive big brother! System: [Golden light] [Divine bird] [Golden light] System: You drew... the most legitimate heir to the ancient Heavenly Court, the one and only representative of the Sun God Bird, the founding master of assassination with the Seven Arrows Book, the patent holder of transforming into a rainbow and vanishing, the number one runaway in the primordial world... Lu Ya!! [Applause.jpg] System: Your big brother has been deployed. System: Your big brother has arrived. Sang Xia: ??? Wait, you could've at least let me say something! Sang Xia: And secondly, [points at the half-dead, three-legged, deformed little canary] you call this a Sun God Bird? System: Dear player, collect achievement points to unlock more features~ Please trust us, your big brothers will become your solid support! Sang Xia starts raising a