Broadly speaking, an introvert is someone who finds social interaction draining, and who feels refreshed after spending time alone. Although some introverts may long for a thriving social life, their shyness and social anxiety usually makes popularity difficult to achieve. Other introverts are confident loners who never even dream of being part of a group.
For introverted anime fans, a gripping series can often provide a fantastic escape from the social pressures of real life. Luckily, there are a bunch of introverted anime characters for fans to commiserate with, regardless of whether or not they want to broaden their real-life social circles.
Shota Aizawa — My Hero Academia
Shota Aizawa (AKA Eraserhead) isn't as flashy as the other characters seen in My Hero Academia, but he has a good reason for his downplayed nature. Despite being a professional superhero and high school teacher, Shota wants to avoid contact with other people as much as he possibly can. He's more than willing to carry out whatever interaction is required for his two jobs, but he fiends for alone time when he's off the clock. In particular, he needs Present Mic to stop following him around, screeching like a parrot.
Death Note's L has spent nearly his entire life in seclusion. While some of this is due to safety and time constraints — he's an extremely busy detective who needs to keep his identity a secret — L's introverted nature is also a personal choice. At 25, L claims that Light Yagami (AKA the serial killer L is chasing) is his first friend ever. While some fans believe that he only says this to provoke a reaction from Light, it's also pretty clear that L doesn't really desire social interaction.
Hinata Hyuuga of Naruto is a sweet, unassuming, anxious girl; all surprising character traits for a powerful ninja who can reliably win dangerous battles. Hinata prefers to keep to herself, in part because of the way she was raised. While Hinata is eventually able to come to an understanding with her repressive family, she retains her introverted nature even after establishing independence. Her attitude contrasts starkly with the playful demeanor of her husband, Naruto Uzumaki, who is probably one of the most extroverted anime characters ever to exist.
Hachiman Hikigaya — My Teen Romantic Comedy SNAFU
My Teen Romantic Comedy SNAFU features Hachiman Hikigaya, a particularly interesting example of an introverted anime character. Hachiman is perfectly happy spending all of his time alone; he interacts with others as obligated, but never really considers the possibility of making friends. Hachiman sees most social interaction as disingenuous, status-building nonsense, and he wants no part in the farce.
While Hachiman has a hard limit on the amount of social interaction he can tolerate, he still wants to connect with others. To achieve his dream, he needs to push past the snark, sarcasm, and feelings of intellectual superiority that normally helps him avoid the pain of rejection. Hachiman's journey to emotional maturity is deeply complex, and the character's often-antithetical headspace comes across as touchingly human.