Otaku Baa-chan

A slice-of-life about a grandma who had been captivated by 2D characters and became an otaku even after turning 80, and her grandson who kindly watches over while trying to keep a straight face!

A host and a high school student are also involved, are they going to show off their otaku power...!?

(Source: Kadokawa, translated)

Note: Includes 1 extra chapter.