As a fan of web novels, I don't have any personal feelings or preferences, but I can tell you some of the most popular sequels of 2019. 1 "Sword God Realm: Swordsman in Black": The first animation in the series was released in 2012 and told an adventure story in a virtual reality world. The continuation animation,"Swordsman in Black," was released in 2019 and continued to tell the story of the protagonist shuttling between virtual reality and the real world. 2 Fate/Grand Order: The continuation of the game series, Fate/Grand Order: Firefly, was released in 2019 and tells the story of the protagonist and a mysterious woman named "Firefly". 3."Attack of the Giants": The continuation of the series,"Attack of the Giants: Orion", was released in 2019 and continued to tell the story of the battle between humans and giants. 4. The Agreed Neverland: This animation was broadcast in 2019 and tells the fantasy adventure story of a group of young people on Neverland. The follow-up animation, The Promised Dream Island: The Battle of the Future, was released in 2020. 5 The Legend of the Sealed Heroes: The first animation in the series was released in 2012 and tells the adventure story of a group of sealed heroes. The follow-up animation, The Legend of the Sealed Hero: The Resurrected F, was released in 2019 and told the story of the protagonist and a mysterious woman named F. These are some of the most popular sequels of 2019, and of course, there are many other excellent animations.