Kozeki Ui

Kozeki Ui is the most relatable shut-in from the huge gacha game Blue Archive. She is the head of the Library Committee at Trinity General School, so she spends all day with old, dusty books instead of talking to other students. She really just wants to be left alone to read and fix up books that are broken. Ui is the perfect example of a hikikomori. She does not want to fight on the front lines like the other girls. She would rather stay safe and quiet in her beloved archives. Senseis all over the world fell in love with her socially awkward charm.

Her design screams "cozy." Ui has messy, dark purple hair that looks like she just got out of bed, and she wears a huge cardigan that covers her tiny frame. With those reading glasses and her always tired look, she makes an absurdly cute librarian waifu. When Sensei compliments her, she gets very flustered very quickly. Even though she looks weak, she carries a heavy sniper rifle with her just in case something bad happens. Fans love her because they want to protect her so badly. That gap between her grumpy, antisocial behavior and her surprisingly sweet reactions is just too strong to ignore.

Ui gets some of the most atmospheric fanart and wallpapers in the fandom. Artists love to draw her in libraries that are full of stuff and well-lit, with sunbeams hitting dust particles that are floating around. There are a lot of cute desktop backgrounds of her sleeping on stacks of books or peeking over her glasses. Our sleepy librarian is the best choice if you want your screen to look calm and relaxing.