If you're looking for manga similar to Fantasy Sister!, you might like these titles.
Aiden was a normal, albeit glitched, NPC trying to make ends meet to support his sister when suddenly, the all-powerful system administrator appeared and deleted his whole town during routine maintenance. Due to his particular glitch, Aiden instead gains the power of an administrator... but it's too little too late, as his sister slowly fades into nothing in his arms. With his new administrator update abilities, Aiden swears to get revenge on the unseen overlords of his world. He'll stop NPC’s from ever being deleted again!
A 'Holy Warrior' to seal the demon lord with his holy powers and holy sword away. However, the protagonist is some lame guy who happens to run out of luck very often. Along with his 2 other friends/followers, he travels around.
The No. 1 ranker “Agaya,” the first player who reached the maximum level in the game, ‘Dungeon Story’, is in despair because his experience stats are no longer increasing. No matter how bizarre moves Agaya tries, the game quests seem too easy. Finally, Agaya thinks of a solution. I will start playing the game from scratch using another account, imitating a Newbie! Will Agaya be able to enjoy the game without others finding out who he is?
Inside the world’s most popular MMORPG, the fearsome Dragon of Despair Taphras is raided by the game’s most powerful guild, composed of six top-rankers. Upon Taphras' defeat, he is divided into six items and split between each of the guild members. Little do they know that Taphras’ sister, Ignis, the Dragon of Destruction, has been awoken. Now, to resurrect her brother, Ignis must take down the guild members one by one and unite the missing items in this dragon-sized tale of revenge!
Is this a comic or a game? When the players aren't around, the NPCs start to worry. Join a band of silly NPCs (non-playable characters) as they attempt to free their cursed village and find their creator!
Chunshik Kim is the CEO of Novis Company, the company behind the VR RPG Novis World, but he has never played his own game before. After claiming that he could become a top ranker without paying any money at an update preview event, he starts Novis World with only his secretary and passion by his side. Will this old dog be able to learn new tricks and become the top ranker in Novis World?
Ever since Kang Seol was a child, he's had strange dreams where he and several people wear masks while playing "World of Eternity," a board game full of quests and adventures. And although Seol was great at the game, he was never able to win. But now, his dreams have become reality, and humans have become game pieces. Humanity's only hope is for Seol to recall what he did in his dreams to survive. Even though he's never won, will he be able to turn the tables and finally make his way to victory?
The Bookworm: Soo-Hyuk. Reading is fun number one; he's always looking for a new way to read books. He even joined a new game, <Pangea>, so no one could disturb him from reading books. The moment Soo-Hyuk finished reading his first book there and closed it, he received a notification: Wisdom +1 level....