chapter4
The chapter starts with Sinon thinking of how many days of school she has left and that she felt that the school was more like an asylum.
Sinon walks into a bookstore where she meets her old "friends" Endou and company who had used her in the past and abandoned her and even resorted to call upon her fear of guns to make Sinon do their bidding after they parted ways.
Sinon recalls how Endou and the other two were her first friends but after some time, she discovers Endou and her friends in her room without her along with some men she didn't know.
From then on, Sinon decided to sever the friendship between her and Endou and company.
As Sinon tries to leave Endou behind, Endou calls upon Sinon's weakness of guns as she makes a gun with her fingers and says "Bang", driving Sinon into a state of fear and convulsion.
Sinon however, is saved by her classmate Shinkawa Kyouji who pretends that he is leading cops to the scene where Endou is bullying Sinon.
The scene changes to introducing Kyouji and describing how Kyouji had introduced and described Gun Gale Online to Sinon in order to help her overcome her fear of guns.
This part describes how the avatar "Sinon", a ruthless sniper who became famous in the wasteland of GGO, was created. Kyouji asks Sinon about the ambush (chapter 3) and Sinon describes the failure and how Behemoth slaughtered four of their six members.
The chapter moves on to describing the types of players in GGO namely the AGI (Agility) and STR (Strength) types and how the newer guns are inaccessible to AGI types because of the lack of STR in the previous AGI types is needed to wield the newer guns that are more powerful than their predecessor.
After splitting ways with Kyomuji, Sinon returns to her apartment and takes out the gun she had obtained from the previous Bullet of Bullets as a prize, the Procyon SL classified as an optical gun in GGO.
It is revealed that Sinon initially wanted to choose in-game money over the gun since she couldn't stand anything related to guns in real life but had decided to receive the gun instead in order to overcome her fear.
The scene moves on to describing the death of her father in a car crash while Sinon was a child and how her mother regressed into when she was a teenager.
It describes how Sinon's mother wished for peace and quiet and began to love Sinon like a little sister.
Sinon recalls how the persistent salesman when she was 9 years old may have led to the incident when she was in fifth grade.
Sinon was at a post office and a burglar burst into the post office she and her mother were at, and threatened to shoot her mother.
To protect her mother, Sinon took the gun from the burglar and pulled the trigger on him, eventually killing him. This is the event that eventually led to Sinon's great fear of guns.
The chapter closes with Sinon back in her room trying to think of how GGO and looking at pictures while killing monsters online with guns can heal the scars and help her overcome her fear.
