Inishie Otaku no Koiwazurai

Otaku culture has finally become mainstream, and Megumi can't quite get used to it. Divorced, with a teen daughter, Megumi thinks fondly back to her days as an anime and manga otaku—in 1995. That year, she transferred to a new school and decided to start fresh by hiding her otaku interests. She found herself taken under the wing of a basketball ace named Masamune, who's got a kind heart and looks just like one of her favorite characters. But, though Megumi catches a whiff of destiny in the air, she's crushed to learn that Masamune detests otaku...

(Source: Kodansha USA)