The official website has updated the gist of the current character relationship web for VRAINS for those who want a brief primer. Warning, spoilers and unmentioned character names.

DEN CITY

Yusaku, Naoki and Aoi are confirmed as classmates

Akira is listed under SOL Technologies Inc.

Kusanagi and Yusaku’s relationship is “Confidants”

Yusaku is indifferent to Naoki

Naoki considers Yusaku unpleasant

The Mysterious Lifeform “Ignis” is Yusaku’s partner

Yusaku is trying to use Ignis as a bargaining chip/hostage

Ignis is on the run from SOL Technologies

Ignis slipped out from SOL Technologies’ fingers

Akira and Aoi are brother and sister

LINK VRAINS

Playmaker has no interest in the Charisma Duelists

But the Charisma Duelists acknowledge Playmaker’s skill and talent

The Mysterious Lifeform “Ignis” is Playmaker’s partner

Playmaker is trying to use Ignis as a bargaining chip/hostage

Akira is aware of Blue Angel’s true identity

SOL Technologies and the Knights of Hanoi oppose one another

Playmaker and the Knights of Hanoi oppose one another

Ignis is on the run from SOL Technologies

Both SOL Technologies and the Knights of Hanoi are searching for Ignis

Ignis is a Threat to the Knights of Hanoi

Source