Training Day

Training Day is a story blog released on February 2025 on the game's website.

Overview

The Atom and Green Lantern John Stewart are with Blue Lantern Esperanza and her twin sister Luzia of the Indigo Tribe at Esperanza's back yard for training (in microscopic sizes, for safety). Luzia demonstrates aptitude with her ring, and copying the abilities of other rings. Their session is interrupted when John is called away to Mogo's space sector due to a "Crisis situation", and Esperanza asks for permission to come along, as there is something important for her on Mogo. Luzia and the Atom watch them leave Earth.

This story blog features an art of John Stewart from the variant cover of Justice League Vol 4 #6 (2018) by Jim Lee, and an art of The Atom from the cover for the Legends of Tomorrow: The Atom 2018 collection, which is a remake of the cover for The Atom Special #1 (1993) by Steve Dillon.
The Atom mentions he once shrank Superboy, Supergirl, and Steel to save Superman. That happened during the crossover Superman: Critical Condition (2000).
The Atom mentions that he and John Stewart have both been Indigo Lanterns before, which occurred in the comics in the events Blackest Night (2009-2010) and Brightest Day (2010-2011).
Luzia and Esperanza are referred to as twins, but it was not specified if they were identical or sororal twins.
After the events of Hope Burns Bright, it is safe to say that the "something important" to Esperanza was SPOILER her daughter, Hope Cavalera.