What kind of title is this?: Manga.
How many volumes are there?: 4 volumes are listed.
How many chapters are there?: 27 chapters are listed.
Where can I read it?: Reading links are listed for Official Site, Yen Press. Check availability in your region.

Synopsis

About Sword Art Online Alternative: Gun Gale Online

Karen Kohiruimaki always felt out of place in the real world. Due to her extreme height, she found it hard to make friends with other girls her age. Everything changes when she's introduced to VR and Gun Gale Online. In GGO, Karen is free to play the cute, chibi avatar of her dreams! Can Karen find friendship in this bullet-ridden MMO...? (Source: Yen Press) Note: Chapter count reflects the magazine releases; the manga was re-arranged into 20 chapters across 4 volumes.

Action Fantasy Sci-Fi