Douluo: My Martial Soul is from Roco Kingdom

In a world without systems or harems, Ma Luoque transmigrates into the Douluo Dalu universe during the events of the first series, becoming the twin brother of Ma Hongjun. Choosing to join the Spirit Hall alongside his brother, Ma Luoque awakens a martial soul that defies expectation: Guai Guai Hu, a pet from the Roco Kingdom. This juvenile form of the Swan Lady comes with unique traits, including an obsessive cleanliness, and grants him the "Swan Domain." Within this domain, all hostility, killing intent, evil thoughts, poison, and backlash effects are nullified for everyone, while allies share all buff effects. Ma Luoque quickly realizes that this companion is his true cheat code. During their hunt for the first spirit ring, Ma Luoque encounters what appears to be a mutated Gale Demon Wolf but identifies it as a Shiny Demon Wolf from Roco Kingdom. He recalls a notice from the Spirit Hall issued years prior by the Pope, stating that certain mutated beasts yield no spirit rings upon death because they are not native soul beasts, but rather Roco Kingdom pets. Since this anomaly does not significantly disrupt the known plot, Ma Luoque focuses on his own growth. However, the situation escalates when he is attacked by a corrupted Speed Dog, revealing that the "Nightmare" faction also exists in the Douluo world. As chaos brews, the Creator White Tree appears to him, declaring that heaven is about to place a great responsibility on his shoulders.