After Traveling Through Time, I Became the Birdman King by Being Cute.

Lin Jiujiu, the European King player of "Aitaria", accidentally traveled through time and became the only silver-throated long-tailed tit in his game that can only act cute. When her level returned to zero and she was in a desperate situation, she discovered that her magical skill [Cuteness is Justice] was equally effective in the real world. With her cute aura and business acumen, she led her fellow birdmen, who were weak, to use their flying talents to find new ways, from setting up street stalls to building banks, to build a barren tribe into a financial and trade center that radiates across the continent [Silver Bird City], becoming a veritable bird king. However, when the server maintenance ended and players around the world were about to log into the "real" world, Lin Jiujiu, who was standing on the cloud clock tower, smiled slightly and issued the first royal order: "The silver birds are all gathering their wool... The special plan to welcome new players is launched!"