If you're looking for manga similar to .hack//Link, you might like these titles.
Pokemon-lover Ginji fell asleep on the eve of his birthday, eager to awaken and find his presents. However, when he opened his eyes, Ginji found himself... in the body of a Torchic?! Now in the world of Pokemon, Ginji meets a week Mudkip who strives to be part of a Rescue Team, and together the two form a group to assist other furry and feathered friends. Ginji must now try to discover why he's transformed, help unravel a thousand year old legend, and support his new comrades in the process!
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Now, hear me out. I know Pokemon has a certain stigma associated with it, but I believe Ginji's Rescue Team and .hack//Link are decent recs for each other (perhaps moreso Pokemon->Ginji).
Both involve an unlikely hero being swept into a strange world where he must overcome obstacles in order to save it and find his way home.
The year is 2022, and gamers have lined up on launch day to connect to Sword Art Online, a hotly anticipated MMORPG that allows players to connect to an immersive, lush virtual reality world with special helmets called Nerve Gear. Kirito is eager to return to the place where he spent a good deal of time as a beta tester, and quickly becomes friends with Klein, a newbie player. But soon, Sword Art Online's 10,000 players discover that not only are they unable to logout, the only way they can return to their physical bodies is by beating the 100-level tower's final boss - that is, if their HP doesn't drop to zero first, for death in the game means death in the real world. Now, with no one else to turn to, Kirito and the other participants must survive the game as best they can – some forming guilds, others ruthlessly leaving their peers behind, and many tragically falling by the wayside or to the merciless monsters populating the lands...
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These cover humans getting trapped in an MMO while fighting to save others and for a way to escape. However, .hack//Link is somewhat comical while SAO can be rather dark with its “die in the game you die in real life” and player killing player scenarios. If you’re merely looking for something else with the same setting and enjoy fantasy RPGs, it’s time to prepare for your next journey. It’s going to be a difficult one, since you’ll be “stuck inside” these tales, but you wont even notice the hours you spend there - or ever want to leave when it‘s finally time!
In a world where everyone connects to an online network, pudgy Haruyuki Arita can't seem to catch a break. Constantly bullied, afraid to face reality and paranoid his two childhood friends pity him, the teenager uses online games as a way to escape his problems. But things change one day when Haruyuki's beautiful upperclassman Kuroyukihime approaches him with a mysterious time-decelerating program known as Brain Burst - there‘s just one catch. To keep the ability, he must defeat other Brain Burst wielders in Accel World, an exclusive, virtual MMORPG, and the newbie player will need all the help he can get. Eager to prove he's not a pathetic weakling, Haruyuki joins forces with Kuroyukihime to challenge fierce competitors and discover just how incredible Accel World and he truly are.
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After a beautiful middle school girl with black hair uses a strange disc/program on him, a male middle school student is introduced to a mysterious video-game world he becomes a sudden yet popular fighter in. If you enjoy video-game settings in your manga and characters leveling up to learn new skills and abilities, get ready to be introduced to either Accel World or The World R:X.
It's been two years since Kirito entered another mysterious fantasy world and met the boy named Eugeo. At the Northern Centoria Master Swordsmanship Academy, the two of them have advanced to become upper rank trainee swordsmen. Now they spend their days training, aiming to one day earn the rank of Integrity Knight, the greatest peacekeepers in the human world. Soon, appropriate for their new ranks, both Kirito and Eugeo are assigned apprentices and they all deepen their bonds while perfecting their bodies and minds. But suddenly, an evil rears its head and threatens their peaceful lives. Eugeo tries to draw his sword to fight but he finds himself helpless as a message appears in words he can't read. They say--SYSTEM ALERT.
In VRMMO -CtG- (Cradle to the Glaive), Kasugai Yuu has <married> Mifa, a girl he has just met. After that, their daughter Haruha is born and grown!? Moreover… “I’ve come, daddy!” “K-Kugimiya!” In the real world, the real Haruha, along with the real Mifa – Kugimiya Miharu – suddenly appeared! The truth is, Haruha is a <new human> created in secret!! Living under the same roof, Yuu and Miharu are stuck with caring for Haruha both in game and in life, the one who controls the fate of humanity!?
At the recommendation of her younger brother who lives with her, Mari Akizuki decides to play the massively popular VRMMORPG "Mebius World Online". Being a beginner, she had only wanted to enjoy the game at a leisurely pace... But before she knows it, she ends up battling a boss monster, earning a rare skill, and becoming the center of attention?! And so begins the kind-hearted Mari-nee's VRMMO life, as she bonds with both players and NPCs alike!
Futayado Nanaka who calls herself a part time warrior, though all the places she worked at got bankrupt, now has too much time on her hands. And to that opportunity, she was invited by a very close friend of hers, a pro gamer and a livestreamer, to take part in the world’s first VRMMO with a livestream function "WorldLive-ONLINE". And so, a 21-year-old real cheat girl who has extraordinary strength, carries a blunt weapon and rampages through the VR world.
Kirito and Sinon's battle with Death Gun is over, but mere weeks later, something strange is afoot in the next-generation VRMMO ALfheim Online. A new duelist with a custom sword skill is defeating all comers--including Kirito! But when Asuna goes to face this duelist, she receives something she never expected: an invitation to an exclusive guild! But what is their aim?